diff --git a/docs/forge-providers.md b/docs/forge-providers.md
index f633a1922..6cc4c518e 100644
--- a/docs/forge-providers.md
+++ b/docs/forge-providers.md
@@ -84,6 +84,20 @@ Register the adapter in `defaultForgeRegistry` with:
 - `matchesHost` from manifest `cloudHosts`
 - `probeHost` when self-hosted/Enterprise detection is supported
 
+Current change-request lookup uses two identities deliberately:
+
+- An open PR/MR belongs to the checkout when its head branch and head repository
+  match. Its remote head SHA may differ because the checkout can be ahead,
+  behind, or contain commits that have not been pushed yet.
+- A merged or closed PR/MR belongs to the checkout only when its recorded head
+  SHA exactly matches the checkout's current `HEAD`. Branch names are reusable;
+  selecting the newest terminal request by branch alone can silently attach an
+  old promotion or feature request to new work.
+
+Thread the checkout head SHA through adapter cache and poll identities as well
+as the lookup itself. Otherwise a commit made on the same branch can inherit the
+previous commit's cached terminal status until the cache expires.
+
 Cloud hosts in the manifest are a bounded public-host list, not a self-host
 allowlist. Self-hosted detection is a trust gate: Paseo only talks to a forge
 host that is either a known cloud host or one the CLI is already authenticated
diff --git a/packages/app/src/git/pull-request-panel/pane.tsx b/packages/app/src/git/pull-request-panel/pane.tsx
index 3aba5bc89..582d9543a 100644
--- a/packages/app/src/git/pull-request-panel/pane.tsx
+++ b/packages/app/src/git/pull-request-panel/pane.tsx
@@ -411,6 +411,7 @@ export function PullRequestPane({
               repoName: data.repoName,
               checkRunId: ref.checkRunId,
               workflowRunId: ref.workflowRunId,
+              changeRequestNumber: data.number,
             };
             // COMPAT(githubCheckDetailsRpc): added in v0.1.106, remove after 2026-12-28 once
             // all supported clients use checkout.forge.get_check_details.*.
diff --git a/packages/protocol/src/messages.ts b/packages/protocol/src/messages.ts
index f1338bd45..a566f8e5c 100644
--- a/packages/protocol/src/messages.ts
+++ b/packages/protocol/src/messages.ts
@@ -1762,9 +1762,9 @@ const CheckoutCheckDetailsRequestPayloadSchema = z.object({
   checkRunId: z.number().int().positive().optional(),
   workflowRunId: z.number().int().positive().optional(),
   // Permanent forge-routing field, optional because only some forges need it:
-  // GitLab routes the check-details fetch to the change request's head pipeline
-  // by iid, so a fork/detached MR pipeline (which lives in the source project,
-  // not the checkout's target project) resolves correctly. GitHub ignores it.
+  // GitLab routes check details to the MR's head pipeline; Gitea-family adapters
+  // resolve the PR head SHA by number, including after merge/close. GitHub
+  // ignores it.
   changeRequestNumber: z.number().int().positive().optional(),
   requestId: z.string(),
 });
diff --git a/packages/server/src/server/session/checkout/checkout-session.ts b/packages/server/src/server/session/checkout/checkout-session.ts
index 0b97961a0..3505a5b12 100644
--- a/packages/server/src/server/session/checkout/checkout-session.ts
+++ b/packages/server/src/server/session/checkout/checkout-session.ts
@@ -1220,7 +1220,8 @@ export class CheckoutSession {
 
     try {
       // The payload schema keeps checkRunId and workflowRunId optional (a Gitea
-      // Actions run has no check-run id; GitLab routes by changeRequestNumber),
+      // Actions run has no check-run id; forge adapters may also route by
+      // changeRequestNumber),
       // but a request that addresses no check at all is not actionable — reject
       // it here with a clear message instead of failing deep in an adapter. The
       // schema itself cannot enforce this: it is a discriminated-union member, so
diff --git a/packages/server/src/server/workspace-git-service.primitive.test.ts b/packages/server/src/server/workspace-git-service.primitive.test.ts
index eb76955a3..99664c530 100644
--- a/packages/server/src/server/workspace-git-service.primitive.test.ts
+++ b/packages/server/src/server/workspace-git-service.primitive.test.ts
@@ -1144,7 +1144,10 @@ describe("WorkspaceGitServiceImpl primitive refresh entrypoint", () => {
       createCheckoutFacts(cwd, {
         currentBranch: "feature",
         remoteUrl: "https://forge-self-heal.test/acme/repo.git",
-        pullRequestLookupTarget: { headRef: "feature" },
+        pullRequestLookupTarget: {
+          headRef: "feature",
+          headSha: "1111111111111111111111111111111111111111",
+        },
       }),
     );
     const getCheckoutStatus = vi.fn(async (cwd: string) =>
@@ -1163,12 +1166,13 @@ describe("WorkspaceGitServiceImpl primitive refresh entrypoint", () => {
       const subscription = service.registerWorkspace({ cwd: REPO_CWD }, listener);
       await flushPromises();
 
-      await vi.advanceTimersByTimeAsync(60_000);
+      await vi.advanceTimersByTimeAsync(120_000);
       await flushPromises();
 
       expect(forge.getCurrentPullRequestStatus).toHaveBeenCalledWith({
         cwd: REPO_CWD,
         headRef: "feature",
+        headSha: "1111111111111111111111111111111111111111",
         reason: "self-heal-forge-pr-status",
       });
       expect(listener).toHaveBeenCalledWith(
@@ -1189,6 +1193,108 @@ describe("WorkspaceGitServiceImpl primitive refresh entrypoint", () => {
     }
   });
 
+  test("generic forge self-heal uses the fast poll window while checks are pending", async () => {
+    const forge = {
+      ...createGitHubServiceStub(),
+      retainCurrentPullRequestStatusPoll: undefined,
+      getCurrentPullRequestStatus: vi.fn(async () =>
+        createCurrentPullRequestStatus({ checksStatus: "pending" }),
+      ),
+    };
+    const unregister = defaultForgeRegistry.register("forge-pending-test", {
+      createService: () => forge,
+      matchesHost: (host) => host === "forge-pending.test",
+    });
+    const pendingResult = createPullRequestStatusResult();
+    if (pendingResult.status) {
+      pendingResult.status.checksStatus = "pending";
+      pendingResult.status.checks = [{ name: "ci", status: "pending" }];
+    }
+    const service = createService({
+      getCheckoutSnapshotFacts: vi.fn(async (cwd: string) =>
+        createCheckoutFacts(cwd, {
+          currentBranch: "feature",
+          remoteUrl: "https://forge-pending.test/acme/repo.git",
+          pullRequestLookupTarget: { headRef: "feature" },
+        }),
+      ),
+      getCheckoutStatus: vi.fn(async (cwd: string) =>
+        createCheckoutStatus(cwd, {
+          currentBranch: "feature",
+          remoteUrl: "https://forge-pending.test/acme/repo.git",
+        }),
+      ),
+      getPullRequestStatus: vi.fn(async () => pendingResult),
+    });
+
+    try {
+      const subscription = service.registerWorkspace({ cwd: REPO_CWD }, vi.fn());
+      await flushPromises();
+      await vi.advanceTimersByTimeAsync(20_000);
+      await flushPromises();
+
+      expect(forge.getCurrentPullRequestStatus).toHaveBeenCalledTimes(1);
+      subscription.unsubscribe();
+    } finally {
+      service.dispose();
+      unregister();
+    }
+  });
+
+  test("generic forge poll refreshes immediately when checkout HEAD changes", async () => {
+    let nowMs = 0;
+    let headSha = "1111111111111111111111111111111111111111";
+    const forge = {
+      ...createGitHubServiceStub(),
+      retainCurrentPullRequestStatusPoll: undefined,
+      getCurrentPullRequestStatus: vi.fn(async () => createCurrentPullRequestStatus()),
+    };
+    const unregister = defaultForgeRegistry.register("forge-head-change-test", {
+      createService: () => forge,
+      matchesHost: (host) => host === "forge-head-change.test",
+    });
+    const service = createService({
+      now: () => new Date(nowMs),
+      getCheckoutSnapshotFacts: vi.fn(async (cwd: string) =>
+        createCheckoutFacts(cwd, {
+          currentBranch: "feature",
+          remoteUrl: "https://forge-head-change.test/acme/repo.git",
+          pullRequestLookupTarget: { headRef: "feature", headSha },
+        }),
+      ),
+      getCheckoutStatus: vi.fn(async (cwd: string) =>
+        createCheckoutStatus(cwd, {
+          currentBranch: "feature",
+          remoteUrl: "https://forge-head-change.test/acme/repo.git",
+        }),
+      ),
+      getPullRequestStatus: vi.fn(async () => createPullRequestStatusResult("Visible PR")),
+    });
+
+    try {
+      await service.getSnapshot(REPO_CWD);
+      const subscription = service.registerWorkspace({ cwd: REPO_CWD }, vi.fn());
+      expect(service.peekSnapshot(REPO_CWD)?.forge.pullRequest?.title).toBe("Visible PR");
+
+      headSha = "2222222222222222222222222222222222222222";
+      nowMs = 3_000;
+      await service.refresh(REPO_CWD);
+
+      expect(service.peekSnapshot(REPO_CWD)?.forge.pullRequest).toBeNull();
+      expect(forge.getCurrentPullRequestStatus).not.toHaveBeenCalled();
+
+      await vi.advanceTimersByTimeAsync(0);
+      await flushPromises();
+
+      expect(forge.getCurrentPullRequestStatus).toHaveBeenCalledTimes(1);
+      expect(service.peekSnapshot(REPO_CWD)?.forge.pullRequest?.title).toBe("MR self-healed");
+      subscription.unsubscribe();
+    } finally {
+      service.dispose();
+      unregister();
+    }
+  });
+
   test("subscription cancels generic forge PR status self-heal polling after unsubscribe", async () => {
     const forge = {
       ...createGitHubServiceStub(),
@@ -1221,7 +1327,7 @@ describe("WorkspaceGitServiceImpl primitive refresh entrypoint", () => {
       await flushPromises();
       subscription.unsubscribe();
 
-      await vi.advanceTimersByTimeAsync(60_000);
+      await vi.advanceTimersByTimeAsync(120_000);
       await flushPromises();
 
       expect(forge.getCurrentPullRequestStatus).not.toHaveBeenCalled();
diff --git a/packages/server/src/server/workspace-git-service.ts b/packages/server/src/server/workspace-git-service.ts
index a0c7818c5..71209da34 100644
--- a/packages/server/src/server/workspace-git-service.ts
+++ b/packages/server/src/server/workspace-git-service.ts
@@ -47,7 +47,9 @@ import { checkoutLiteFromGitSnapshot } from "./workspace-registry-model.js";
 const WORKSPACE_GIT_WATCH_DEBOUNCE_MS = 1_000;
 const BACKGROUND_GIT_FETCH_INTERVAL_MS = 180_000;
 export const WORKSPACE_GIT_SELF_HEAL_INTERVAL_MS = 60_000;
-const FORGE_PR_STATUS_POLL_INTERVAL_MS = 60_000;
+const FORGE_PR_STATUS_POLL_FAST_INTERVAL_MS = 20_000;
+const FORGE_PR_STATUS_POLL_SLOW_INTERVAL_MS = 120_000;
+const FORGE_PR_STATUS_POLL_ERROR_BACKOFF_CAP_MS = 300_000;
 const WORKING_TREE_WATCH_FALLBACK_REFRESH_MS = 5_000;
 // Auxiliary reads may reuse cached values within this window; snapshots do not expire on read.
 const WORKSPACE_GIT_AUXILIARY_READ_TTL_MS = 15_000;
@@ -336,6 +338,7 @@ interface WorkspaceGitAuxiliaryReadCacheEntry<T> {
 
 interface WorkspaceForgePrStatusPollTarget {
   headRef: string;
+  headSha?: string;
   headRepositoryOwner?: string;
 }
 
@@ -1206,9 +1209,11 @@ export class WorkspaceGitServiceImpl implements WorkspaceGitService {
       remoteUrl,
       target: pollTarget,
     });
+    const previousPollKey = target.forgePrStatusPollKey;
     if (target.forgePrStatusPollKey === pollKey && target.forgePrStatusPollSubscription) {
       return;
     }
+    const pollImmediately = previousPollKey !== null && previousPollKey !== pollKey;
 
     this.stopForgePrStatusPollForTarget(target);
     target.forgePrStatusPollKey = pollKey;
@@ -1216,6 +1221,7 @@ export class WorkspaceGitServiceImpl implements WorkspaceGitService {
       target.forgePrStatusPollSubscription = resolution.service.retainCurrentPullRequestStatusPoll({
         cwd: target.cwd,
         headRef: pollTarget.headRef,
+        ...(pollTarget.headSha ? { headSha: pollTarget.headSha } : {}),
         ...(pollTarget.headRepositoryOwner
           ? { headRepositoryOwner: pollTarget.headRepositoryOwner }
           : {}),
@@ -1253,6 +1259,7 @@ export class WorkspaceGitServiceImpl implements WorkspaceGitService {
       forge: resolution.forge,
       service: resolution.service,
       pollTarget,
+      pollImmediately,
     });
   }
 
@@ -1261,23 +1268,28 @@ export class WorkspaceGitServiceImpl implements WorkspaceGitService {
     forge,
     service,
     pollTarget,
+    pollImmediately,
   }: {
     target: WorkspaceGitTarget;
     forge: string;
     service: ForgeService;
     pollTarget: WorkspaceForgePrStatusPollTarget;
+    pollImmediately: boolean;
   }): { unsubscribe: () => void } {
     let closed = false;
     let timer: NodeJS.Timeout | null = null;
+    let latestStatus: WorkspaceGitRuntimeSnapshot["forge"]["pullRequest"] =
+      target.latestForge?.pullRequest ?? null;
+    let consecutiveErrors = 0;
 
-    const schedule = () => {
+    const schedule = (delayMs: number) => {
       if (closed) {
         return;
       }
       timer = setTimeout(() => {
         timer = null;
         void poll();
-      }, FORGE_PR_STATUS_POLL_INTERVAL_MS);
+      }, delayMs);
     };
 
     const poll = async () => {
@@ -1288,17 +1300,21 @@ export class WorkspaceGitServiceImpl implements WorkspaceGitService {
         const status = await service.getCurrentPullRequestStatus({
           cwd: target.cwd,
           headRef: pollTarget.headRef,
+          ...(pollTarget.headSha ? { headSha: pollTarget.headSha } : {}),
           ...(pollTarget.headRepositoryOwner
             ? { headRepositoryOwner: pollTarget.headRepositoryOwner }
             : {}),
           reason: "self-heal-forge-pr-status",
         });
         if (!closed && this.isActiveObservedWorkspaceTarget(target)) {
+          latestStatus = status;
+          consecutiveErrors = 0;
           this.rememberForgePrStatusSnapshot(target, buildForgeSnapshotFromStatus(status, forge), {
             notify: true,
           });
         }
       } catch (error) {
+        consecutiveErrors += 1;
         this.logger.warn(
           {
             err: error,
@@ -1311,11 +1327,16 @@ export class WorkspaceGitServiceImpl implements WorkspaceGitService {
           "Failed to run forge PR status self-heal refresh",
         );
       } finally {
-        schedule();
+        schedule(computeGenericForgeNextInterval(latestStatus, consecutiveErrors));
       }
     };
 
-    schedule();
+    // A git-only refresh clears forge state when the commit-aware poll identity
+    // changes. Revalidate that new identity immediately instead of leaving the
+    // PR panel empty for the full stable polling interval.
+    schedule(
+      pollImmediately ? 0 : computeGenericForgeNextInterval(latestStatus, consecutiveErrors),
+    );
     return {
       unsubscribe: () => {
         closed = true;
@@ -2171,7 +2192,32 @@ function buildWorkspaceForgePrStatusPollKey({
   remoteUrl: string;
   target: WorkspaceForgePrStatusPollTarget;
 }): string {
-  return JSON.stringify([forge, remoteUrl, target.headRef, target.headRepositoryOwner ?? null]);
+  return JSON.stringify([
+    forge,
+    remoteUrl,
+    target.headRef,
+    target.headSha ?? null,
+    target.headRepositoryOwner ?? null,
+  ]);
+}
+
+function computeGenericForgeNextInterval(
+  status: WorkspaceGitRuntimeSnapshot["forge"]["pullRequest"],
+  consecutiveErrors: number,
+): number {
+  const isPending =
+    status?.checksStatus === "pending" ||
+    status?.checks?.some((check) => check.status === "pending") === true;
+  const baseInterval = isPending
+    ? FORGE_PR_STATUS_POLL_FAST_INTERVAL_MS
+    : FORGE_PR_STATUS_POLL_SLOW_INTERVAL_MS;
+  if (consecutiveErrors <= 1) {
+    return baseInterval;
+  }
+  return Math.min(
+    baseInterval * 2 ** (consecutiveErrors - 1),
+    FORGE_PR_STATUS_POLL_ERROR_BACKOFF_CAP_MS,
+  );
 }
 
 async function runGitFetch(cwd: string): Promise<void> {
diff --git a/packages/server/src/services/forge-registry.test.ts b/packages/server/src/services/forge-registry.test.ts
index dd12174ec..8671f51f8 100644
--- a/packages/server/src/services/forge-registry.test.ts
+++ b/packages/server/src/services/forge-registry.test.ts
@@ -10,10 +10,12 @@ describe("forge registry", () => {
     const gitlab = createForgeService("gitlab");
     const gitea = createForgeService("gitea");
     const forgejo = createForgeService("forgejo");
+    const codeberg = createForgeService("codeberg");
     expect(github?.getCurrentPullRequestStatus).toBeTypeOf("function");
     expect(gitlab?.getCurrentPullRequestStatus).toBeTypeOf("function");
     expect(gitea?.getCurrentPullRequestStatus).toBeTypeOf("function");
     expect(forgejo?.getCurrentPullRequestStatus).toBeTypeOf("function");
+    expect(codeberg?.getCurrentPullRequestStatus).toBeTypeOf("function");
   });
 
   it("returns null for an unregistered forge", () => {
@@ -29,9 +31,10 @@ describe("forge registry", () => {
     expect(defaultForgeRegistry.has("gitlab")).toBe(true);
     expect(defaultForgeRegistry.has("gitea")).toBe(true);
     expect(defaultForgeRegistry.has("forgejo")).toBe(true);
+    expect(defaultForgeRegistry.has("codeberg")).toBe(true);
     expect(defaultForgeRegistry.has("bitbucket")).toBe(false);
     expect(defaultForgeRegistry.ids()).toEqual(
-      expect.arrayContaining(["github", "gitlab", "gitea", "forgejo"]),
+      expect.arrayContaining(["github", "gitlab", "gitea", "forgejo", "codeberg"]),
     );
   });
 
diff --git a/packages/server/src/services/forge-service.ts b/packages/server/src/services/forge-service.ts
index b0bf9c2a1..7f6d36465 100644
--- a/packages/server/src/services/forge-service.ts
+++ b/packages/server/src/services/forge-service.ts
@@ -271,10 +271,10 @@ export type GetCheckDetailsOptions = {
   checkRunId?: number;
   workflowRunId?: number;
   /**
-   * GitLab-only: the change request iid. GitLab routes the fetch to the change
-   * request's head pipeline (`glab ci get --merge-request`), so a fork/detached
-   * MR pipeline living in the source project resolves instead of 404ing against
-   * the checkout's target project. GitHub ignores it.
+   * Change request number used when check details must resolve against a
+   * specific request rather than the current branch. GitLab routes the fetch to
+   * the MR's head pipeline; Gitea-family adapters resolve the PR head SHA by
+   * number, including for terminal PRs. GitHub ignores it.
    */
   changeRequestNumber?: number;
 } & ForgeReadOptions;
@@ -456,6 +456,7 @@ export interface ForgeService {
     options: {
       cwd: string;
       headRef: string;
+      headSha?: string;
       headRepositoryOwner?: string;
     } & ForgeReadOptions,
   ): Promise<CurrentPullRequestStatus | null>;
@@ -496,6 +497,7 @@ export interface ForgeService {
   retainCurrentPullRequestStatusPoll?(options: {
     cwd: string;
     headRef: string;
+    headSha?: string;
     headRepositoryOwner?: string;
     onStatus?: (status: CurrentPullRequestStatus | null) => void;
     onError?: (error: unknown) => void;
diff --git a/packages/server/src/services/gitea-service.test.ts b/packages/server/src/services/gitea-service.test.ts
index 51e97b88f..6b2028e66 100644
--- a/packages/server/src/services/gitea-service.test.ts
+++ b/packages/server/src/services/gitea-service.test.ts
@@ -74,6 +74,35 @@ const CONFLICTING_PR = {
   ci: "failure",
 };
 
+function currentPullRequestApi(input: {
+  number: number;
+  state: "open" | "closed";
+  headRef: string;
+  headSha: string;
+  merged?: boolean;
+}) {
+  return {
+    number: input.number,
+    html_url: `https://gitea.com/example-user/sample-repo/pulls/${input.number}`,
+    title: "Historical pull request",
+    body: "",
+    state: input.state,
+    merged: input.merged ?? false,
+    mergeable: true,
+    updated_at: "2026-06-26T10:00:00Z",
+    labels: [],
+    head: {
+      ref: input.headRef,
+      sha: input.headSha,
+      repo: { id: 1, owner: { login: "example-user" } },
+    },
+    base: {
+      ref: "main",
+      repo: { id: 1, owner: { login: "example-user" } },
+    },
+  };
+}
+
 const STATUS_PR_VIEW = {
   id: 161482,
   index: 5,
@@ -1048,6 +1077,43 @@ describe("createGiteaService", () => {
     ]);
   });
 
+  it("resolves terminal PR check details by explicit change request number", async () => {
+    const headSha = "8888888888888888888888888888888888888888";
+    const terminalView = {
+      ...STATUS_PR_VIEW,
+      index: 8,
+      state: "closed",
+      head: "feat/recently-closed",
+      headSha,
+      hasMerged: true,
+      mergedAt: "2026-06-28T17:00:00Z",
+    };
+    const { service, calls } = makeService(
+      (args) => {
+        if (args[0] === "pr" && args[1] === "8") return ok(JSON.stringify(terminalView));
+        if (args[0] === "api" && args[1].endsWith(`/commits/${headSha}/status`)) {
+          return ok(JSON.stringify(SAMPLE_COMBINED_STATUS));
+        }
+        throw new Error(`unexpected call: ${args.join(" ")}`);
+      },
+      { resolveCurrentBranch: async () => "feat/recently-closed" },
+    );
+
+    const details = await service.getCheckDetails({
+      cwd: "/repo",
+      repoOwner: "example-user",
+      repoName: "sample-repo",
+      checkRunId: 2,
+      changeRequestNumber: 8,
+    });
+
+    expect(details).toMatchObject({ checkRunId: 2, name: "ci/lint", status: "pending" });
+    expect(calls).toEqual([
+      ["pr", "8", "-o", "json"],
+      ["api", `repos/example-user/sample-repo/commits/${headSha}/status`],
+    ]);
+  });
+
   it("resolves Gitea Actions check details addressed only by workflowRunId", async () => {
     const { service } = makeService(
       (args) => {
@@ -1172,6 +1238,9 @@ describe("createGiteaService", () => {
     const { service, calls } = makeService(
       (args) => {
         if (args[0] === "pr" && args[1] === "list") return ok(JSON.stringify([]));
+        if (args[0] === "api" && args[1].includes("/pulls?state=all")) {
+          return ok(JSON.stringify([]));
+        }
         throw new Error(`unexpected call: ${args.join(" ")}`);
       },
       {
@@ -1187,13 +1256,9 @@ describe("createGiteaService", () => {
         checkRunId: 2,
       }),
     ).rejects.toThrow("Gitea pull request for branch feat/nonexistent was not found");
-    expect(
-      calls
-        .filter((args) => args[0] === "pr" && args[1] === "list")
-        .map((args) => [argValue(args, "--state"), argValue(args, "--page")]),
-    ).toEqual([
-      ["open", "1"],
-      ["all", undefined],
+    expect(calls[1]).toEqual([
+      "api",
+      "repos/example-user/sample-repo/pulls?state=all&sort=recentupdate&page=1&limit=50",
     ]);
   });
 
@@ -1337,7 +1402,7 @@ describe("createGiteaService", () => {
     expect(status?.checksStatus).toBe("failure");
   });
 
-  it("finds the current branch PR on the second open pull-request page", async () => {
+  it("finds the open current-branch PR even when its remote head SHA differs", async () => {
     const firstPage = Array.from({ length: 50 }, (_, index) => ({
       ...OPEN_PR,
       index: String(100 + index),
@@ -1367,6 +1432,7 @@ describe("createGiteaService", () => {
     const status = await service.getCurrentPullRequestStatus({
       cwd: "/repo",
       headRef: "feat/sample-change",
+      headSha: "9999999999999999999999999999999999999999",
     });
 
     expect(status?.number).toBe(5);
@@ -1381,18 +1447,18 @@ describe("createGiteaService", () => {
   });
 
   it("falls back to the recent all-state PR window for a recently closed current branch PR", async () => {
-    const closedPr = {
-      ...OPEN_PR,
-      index: "8",
+    const headSha = "8888888888888888888888888888888888888888";
+    const closedPr = currentPullRequestApi({
+      number: 8,
       state: "closed",
-      url: "https://gitea.com/example-user/sample-repo/pulls/8",
-      head: "feat/recently-closed",
-    };
+      headRef: "feat/recently-closed",
+      headSha,
+    });
     const { service, calls } = makeService((args) => {
       if (args[0] === "pr" && args[1] === "list" && argValue(args, "--state") === "open") {
         return ok(JSON.stringify([]));
       }
-      if (args[0] === "pr" && args[1] === "list" && argValue(args, "--state") === "all") {
+      if (args[0] === "api" && args[1].includes("/pulls?state=all")) {
         return ok(JSON.stringify([closedPr]));
       }
       throw new Error(`unexpected call: ${args.join(" ")}`);
@@ -1401,22 +1467,79 @@ describe("createGiteaService", () => {
     const status = await service.getCurrentPullRequestStatus({
       cwd: "/repo",
       headRef: "feat/recently-closed",
+      headSha,
     });
 
     expect(status).toMatchObject({ number: 8, headRefName: "feat/recently-closed" });
-    expect(
-      calls
-        .filter((args) => args[0] === "pr" && args[1] === "list")
-        .map((args) => [argValue(args, "--state"), argValue(args, "--page")]),
-    ).toEqual([
-      ["open", "1"],
-      ["all", undefined],
+    expect(calls[1]).toEqual([
+      "api",
+      "repos/example-user/sample-repo/pulls?state=all&sort=recentupdate&page=1&limit=50",
     ]);
   });
 
+  it("uses tea repository context when origin identity is unavailable", async () => {
+    const headSha = "8888888888888888888888888888888888888888";
+    const closedPr = currentPullRequestApi({
+      number: 8,
+      state: "closed",
+      headRef: "feat/recently-closed",
+      headSha,
+    });
+    const { service, calls } = makeService(
+      (args) => {
+        if (args[0] === "pr" && args[1] === "list") return ok("[]");
+        if (args[0] === "api" && args[1].startsWith("repos/{owner}/{repo}/pulls?")) {
+          return ok(JSON.stringify([closedPr]));
+        }
+        throw new Error(`unexpected call: ${args.join(" ")}`);
+      },
+      { resolveRemoteUrl: async () => null },
+    );
+
+    const status = await service.getCurrentPullRequestStatus({
+      cwd: "/repo",
+      headRef: "feat/recently-closed",
+      headSha,
+    });
+
+    expect(status).toMatchObject({ number: 8, headRefName: "feat/recently-closed" });
+    expect(calls[1]).toEqual([
+      "api",
+      "repos/{owner}/{repo}/pulls?state=all&sort=recentupdate&page=1&limit=50",
+    ]);
+  });
+
+  it("does not attach a stale Gitea-family PR after a same-name branch advances", async () => {
+    const stale = currentPullRequestApi({
+      number: 8,
+      state: "closed",
+      headRef: "dev",
+      headSha: "1111111111111111111111111111111111111111",
+      merged: true,
+    });
+    const { service } = makeService((args) => {
+      if (args[0] === "pr" && args[1] === "list") return ok("[]");
+      if (args[0] === "api" && args[1].includes("/pulls?state=all")) {
+        return ok(JSON.stringify([stale]));
+      }
+      throw new Error(`unexpected call: ${args.join(" ")}`);
+    });
+
+    await expect(
+      service.getCurrentPullRequestStatus({
+        cwd: "/repo",
+        headRef: "dev",
+        headSha: "2222222222222222222222222222222222222222",
+      }),
+    ).resolves.toBeNull();
+  });
+
   it("returns null when no PR matches the current branch", async () => {
     const { service, calls } = makeService((args) => {
       if (args[0] === "pr" && args[1] === "list") return ok(JSON.stringify([]));
+      if (args[0] === "api" && args[1].includes("/pulls?state=all")) {
+        return ok(JSON.stringify([]));
+      }
       throw new Error(`unexpected call: ${args.join(" ")}`);
     });
 
@@ -1426,13 +1549,9 @@ describe("createGiteaService", () => {
     });
 
     expect(status).toBeNull();
-    expect(
-      calls
-        .filter((args) => args[0] === "pr" && args[1] === "list")
-        .map((args) => [argValue(args, "--state"), argValue(args, "--page")]),
-    ).toEqual([
-      ["open", "1"],
-      ["all", undefined],
+    expect(calls[1]).toEqual([
+      "api",
+      "repos/example-user/sample-repo/pulls?state=all&sort=recentupdate&page=1&limit=50",
     ]);
   });
 
diff --git a/packages/server/src/services/gitea-service.ts b/packages/server/src/services/gitea-service.ts
index 372a62810..2d467a26e 100644
--- a/packages/server/src/services/gitea-service.ts
+++ b/packages/server/src/services/gitea-service.ts
@@ -234,6 +234,36 @@ const GiteaPullRequestApiSchema = z
   })
   .passthrough();
 
+const GiteaCurrentPullRequestApiSchema = z
+  .object({
+    number: z.number(),
+    html_url: z.string(),
+    title: z.string(),
+    body: z.string().nullable().optional(),
+    state: z.string(),
+    merged: z.boolean().optional(),
+    mergeable: z.boolean().nullable().optional(),
+    updated_at: z.string().optional(),
+    labels: z
+      .array(z.object({ name: z.string() }).passthrough())
+      .optional()
+      .default([]),
+    head: z
+      .object({
+        ref: z.string(),
+        sha: z.string(),
+        repo: GiteaPullRequestRepoSchema.nullable().optional(),
+      })
+      .passthrough(),
+    base: z
+      .object({
+        ref: z.string(),
+        repo: GiteaPullRequestRepoSchema.nullable().optional(),
+      })
+      .passthrough(),
+  })
+  .passthrough();
+
 const GiteaCommitStatusSchema = z
   .object({
     id: z.number(),
@@ -324,6 +354,7 @@ const GiteaReviewCommentSchema = z
 type GiteaPrListItem = z.infer<typeof GiteaPrListItemSchema>;
 type GiteaIssueListItem = z.infer<typeof GiteaIssueListItemSchema>;
 type GiteaPullRequestView = z.infer<typeof GiteaPullRequestViewSchema>;
+type GiteaCurrentPullRequestApi = z.infer<typeof GiteaCurrentPullRequestApiSchema>;
 type GiteaCommitStatus = z.infer<typeof GiteaCommitStatusSchema>;
 type GiteaCombinedCommitStatus = z.infer<typeof GiteaCombinedCommitStatusSchema>;
 type GiteaActionsRun = z.infer<typeof GiteaActionsRunSchema>;
@@ -801,6 +832,25 @@ function parseGiteaRepoFromUrl(url: string): { owner?: string; name?: string } {
   return {};
 }
 
+function currentPullRequestApiToListItem(item: GiteaCurrentPullRequestApi): GiteaPrListItem {
+  const headOwner = item.head.repo?.owner?.login;
+  const baseOwner = item.base.repo?.owner?.login;
+  const head =
+    headOwner && headOwner !== baseOwner ? `${headOwner}:${item.head.ref}` : item.head.ref;
+  return {
+    index: String(item.number),
+    state: item.merged ? "merged" : item.state,
+    url: item.html_url,
+    title: item.title,
+    body: item.body ?? "",
+    ...(item.mergeable != null ? { mergeable: String(item.mergeable) } : {}),
+    base: item.base.ref,
+    head,
+    updated: item.updated_at,
+    labels: item.labels.map((label) => label.name).join(","),
+  };
+}
+
 function toPullRequestSummary(item: GiteaPrListItem): PullRequestSummary {
   const { owner, name } = parseGiteaRepoFromUrl(item.url);
   return {
@@ -1347,6 +1397,7 @@ export function createGiteaService(options: CreateGiteaServiceOptions = {}): For
   async function loadCurrentPullRequestStatus(input: {
     cwd: string;
     headRef: string;
+    headSha?: string;
   }): Promise<CurrentPullRequestStatus | null> {
     const match = await findCurrentPullRequestForHeadRef(input);
     if (!match) {
@@ -1356,7 +1407,9 @@ export function createGiteaService(options: CreateGiteaServiceOptions = {}): For
     return loadCurrentPullRequestChecks(input.cwd, match, status);
   }
 
-  async function resolveExpectedHeadOwner(cwd: string): Promise<string | null> {
+  async function resolveCurrentRepoIdentity(
+    cwd: string,
+  ): Promise<{ owner: string; name: string } | null> {
     const remoteUrl = await resolveRemoteUrl(cwd);
     if (!remoteUrl) {
       return null;
@@ -1365,34 +1418,60 @@ export function createGiteaService(options: CreateGiteaServiceOptions = {}): For
     if (!location) {
       return null;
     }
-    return parseGitHubRemoteIdentity(location.path)?.owner ?? null;
+    const identity = parseGitHubRemoteIdentity(location.path);
+    return identity ? { owner: identity.owner, name: identity.name } : null;
   }
 
   async function findCurrentPullRequestForHeadRef(input: {
     cwd: string;
     headRef: string;
+    headSha?: string;
   }): Promise<GiteaPrListItem | null> {
-    const expectedHeadOwner = await resolveExpectedHeadOwner(input.cwd);
+    const repoIdentity = await resolveCurrentRepoIdentity(input.cwd);
+    const expectedHeadOwner = repoIdentity?.owner ?? null;
     const openMatch = await findOpenPullRequestForHeadRef(input, expectedHeadOwner);
     if (openMatch) {
       return openMatch;
     }
 
-    const recentItems = await listPullRequestItems({
-      cwd: input.cwd,
-      state: "all",
-      limit: CURRENT_PR_LOOKUP_PAGE_SIZE,
-    });
-    return (
-      recentItems.find((item) => matchesCurrentHeadRef(item, input.headRef, expectedHeadOwner)) ??
-      null
+    // tea discovers repository context from any configured git remote, while
+    // the default remote resolver reads origin only. Preserve that broader
+    // discovery for repositories whose primary remote has another name.
+    const repoPath = repoIdentity
+      ? `repos/${encodeURIComponent(repoIdentity.owner)}/${encodeURIComponent(repoIdentity.name)}`
+      : "repos/{owner}/{repo}";
+    const recentItems = await runJsonArray(
+      [
+        "api",
+        `${repoPath}/pulls?state=all&sort=recentupdate&page=1&limit=${CURRENT_PR_LOOKUP_PAGE_SIZE}`,
+      ],
+      { cwd: input.cwd },
+      GiteaCurrentPullRequestApiSchema,
     );
+    const candidates = recentItems.filter((item) =>
+      matchesCurrentHeadRef(
+        currentPullRequestApiToListItem(item),
+        input.headRef,
+        expectedHeadOwner,
+      ),
+    );
+    const match =
+      candidates.find((item) => mapGiteaState(item.state) === "open") ??
+      candidates.find(
+        (item) =>
+          mapGiteaState(item.state) !== "open" &&
+          input.headSha !== undefined &&
+          item.head.sha === input.headSha,
+      ) ??
+      null;
+    return match ? currentPullRequestApiToListItem(match) : null;
   }
 
   async function findOpenPullRequestForHeadRef(
     input: {
       cwd: string;
       headRef: string;
+      headSha?: string;
     },
     expectedHeadOwner: string | null,
   ): Promise<GiteaPrListItem | null> {
@@ -1668,7 +1747,11 @@ export function createGiteaService(options: CreateGiteaServiceOptions = {}): For
     },
 
     getCurrentPullRequestStatus(input): Promise<CurrentPullRequestStatus | null> {
-      return loadCurrentPullRequestStatus({ cwd: input.cwd, headRef: input.headRef });
+      return loadCurrentPullRequestStatus({
+        cwd: input.cwd,
+        headRef: input.headRef,
+        headSha: input.headSha,
+      });
     },
 
     async getPullRequest(input: GetPullRequestOptions): Promise<PullRequestSummary> {
diff --git a/packages/server/src/services/github-service.test.ts b/packages/server/src/services/github-service.test.ts
index 0b3fa2787..d82defec0 100644
--- a/packages/server/src/services/github-service.test.ts
+++ b/packages/server/src/services/github-service.test.ts
@@ -21,7 +21,7 @@ const EXPECTED_GITHUB_FAST_POLL_MS = 20_000;
 const EXPECTED_GITHUB_SLOW_POLL_MS = 120_000;
 const EXPECTED_GITHUB_ERROR_BACKOFF_CAP_MS = 300_000;
 const CURRENT_PR_STATUS_BASE_FIELDS =
-  "number,url,title,state,isDraft,baseRefName,headRefName,mergedAt,reviewDecision,mergeable,headRepositoryOwner";
+  "number,url,title,state,isDraft,baseRefName,headRefName,headRefOid,mergedAt,reviewDecision,mergeable,headRepositoryOwner";
 const CURRENT_PR_STATUS_FIELDS = `${CURRENT_PR_STATUS_BASE_FIELDS},statusCheckRollup`;
 
 interface RunnerCall {
@@ -207,6 +207,7 @@ function currentPullRequestJson(overrides: Record<string, unknown> = {}): string
     isDraft: false,
     baseRefName: "main",
     headRefName: "feature/fork",
+    headRefOid: "1111111111111111111111111111111111111111",
     mergedAt: null,
     statusCheckRollup: [],
     reviewDecision: "REVIEW_REQUIRED",
@@ -2246,6 +2247,26 @@ describe("ForgeService", () => {
     expect(status?.mergeable).toBe("UNKNOWN");
   });
 
+  it("keeps an open PR when its remote head SHA differs from the checkout HEAD", async () => {
+    const runner = createRunner([
+      currentPullRequestJson({
+        headRefOid: "1111111111111111111111111111111111111111",
+      }),
+    ]);
+    const service = createGitHubService({
+      runner: runner.runner,
+      resolveGhPath: async () => "/usr/bin/gh",
+    });
+
+    const status = await service.getCurrentPullRequestStatus({
+      cwd: "/repo",
+      headRef: "feature/fork",
+      headSha: "2222222222222222222222222222222222222222",
+    });
+
+    expect(status).toMatchObject({ number: 42, state: "open" });
+  });
+
   it("loads GitHub merge, auto-merge, permission, policy, and queue facts for PR 993 shape", async () => {
     const runner = createScriptedRunner([
       currentPullRequestJson({
@@ -2313,6 +2334,100 @@ describe("ForgeService", () => {
     });
   });
 
+  it("keeps a merged PR only when headRefOid matches the checkout HEAD", async () => {
+    const headSha = "2222222222222222222222222222222222222222";
+    const runner = createRunner([
+      currentPullRequestJson({
+        state: "MERGED",
+        mergedAt: "2026-07-17T12:00:00Z",
+        headRefOid: headSha,
+      }),
+    ]);
+    const service = createGitHubService({
+      runner: runner.runner,
+      resolveGhPath: async () => "/usr/bin/gh",
+    });
+
+    const status = await service.getCurrentPullRequestStatus({
+      cwd: "/repo",
+      headRef: "feature/fork",
+      headSha,
+    });
+
+    expect(status?.number).toBe(42);
+    expect(status?.state).toBe("merged");
+  });
+
+  it("does not attach a stale merged PR after a same-name branch advances", async () => {
+    const stale = currentPullRequestJson({
+      state: "MERGED",
+      mergedAt: "2026-07-17T12:00:00Z",
+      headRefOid: "1111111111111111111111111111111111111111",
+    });
+    const runner = createScriptedRunner([
+      stale,
+      JSON.stringify({ owner: { login: "parentOwner" }, name: "parentRepo", parent: null }),
+      JSON.stringify([JSON.parse(stale)]),
+    ]);
+    const service = createGitHubService({
+      runner: runner.runner,
+      resolveGhPath: async () => "/usr/bin/gh",
+    });
+
+    await expect(
+      service.getCurrentPullRequestStatus({
+        cwd: "/repo",
+        headRef: "feature/fork",
+        headSha: "2222222222222222222222222222222222222222",
+      }),
+    ).resolves.toBeNull();
+    expect(runner.calls.some((call) => call.args[0] === "pr" && call.args[1] === "list")).toBe(
+      true,
+    );
+  });
+
+  it("prefers an open PR over an exact-SHA merged PR for the same head", async () => {
+    const checkoutSha = "2222222222222222222222222222222222222222";
+    const owner = { login: "forkOwner" };
+    const staleView = currentPullRequestJson({
+      state: "MERGED",
+      mergedAt: "2026-07-15T12:00:00Z",
+      headRefOid: "0000000000000000000000000000000000000000",
+      headRepositoryOwner: owner,
+    });
+    const open = JSON.parse(
+      currentPullRequestJson({
+        number: 43,
+        state: "OPEN",
+        headRefOid: "3333333333333333333333333333333333333333",
+        headRepositoryOwner: owner,
+      }),
+    );
+    const exactMerged = JSON.parse(
+      currentPullRequestJson({
+        number: 42,
+        state: "MERGED",
+        mergedAt: "2026-07-16T12:00:00Z",
+        headRefOid: checkoutSha,
+        headRepositoryOwner: owner,
+      }),
+    );
+    const runner = createScriptedRunner([staleView, JSON.stringify([exactMerged, open])]);
+    const service = createGitHubService({
+      runner: runner.runner,
+      resolveGhPath: async () => "/usr/bin/gh",
+    });
+
+    const status = await service.getCurrentPullRequestStatus({
+      cwd: "/repo",
+      headRef: "feature/fork",
+      headSha: checkoutSha,
+      headRepositoryOwner: "forkOwner",
+    });
+
+    expect(status).toMatchObject({ number: 43, state: "open" });
+  });
+
   it("resolves fork PR heads to the parent repository when gh pr view returns a stale branch match", async () => {
     const runner = createScriptedRunner([
       currentPullRequestJson({
@@ -2541,6 +2656,18 @@ describe("ForgeService", () => {
     expect(calls.map((call) => call.args)).toEqual([
       ["pr", "view", "--json", CURRENT_PR_STATUS_FIELDS],
       ["repo", "view", "--json", "owner,name,parent"],
+      [
+        "pr",
+        "list",
+        "--state",
+        "all",
+        "--head",
+        "main",
+        "--limit",
+        "10",
+        "--json",
+        CURRENT_PR_STATUS_FIELDS,
+      ],
     ]);
   });
 
diff --git a/packages/server/src/services/github-service.ts b/packages/server/src/services/github-service.ts
index 163fb6d30..e2d82db88 100644
--- a/packages/server/src/services/github-service.ts
+++ b/packages/server/src/services/github-service.ts
@@ -325,6 +325,7 @@ const CurrentPullRequestStatusSchema = z.object({
   isDraft: z.boolean().optional().catch(false),
   baseRefName: z.string().catch(""),
   headRefName: z.string().catch(""),
+  headRefOid: z.string().optional(),
   mergedAt: z.string().nullable().optional(),
   statusCheckRollup: z.unknown().optional(),
   reviewDecision: z.unknown().optional(),
@@ -493,7 +494,7 @@ query PullRequestCheckoutTarget($owner: String!, $name: String!, $number: Int!)
 }`;
 
 const CURRENT_PR_STATUS_BASE_FIELDS =
-  "number,url,title,state,isDraft,baseRefName,headRefName,mergedAt,reviewDecision,mergeable,headRepositoryOwner";
+  "number,url,title,state,isDraft,baseRefName,headRefName,headRefOid,mergedAt,reviewDecision,mergeable,headRepositoryOwner";
 const CURRENT_PR_STATUS_FIELDS = `${CURRENT_PR_STATUS_BASE_FIELDS},statusCheckRollup`;
 
 const PULL_REQUEST_STATUS_FACTS_QUERY = `
@@ -716,6 +717,7 @@ interface InFlightCacheEntry {
 interface GitHubPollTarget {
   cwd: string;
   headRef: string;
+  headSha?: string;
   headRepositoryOwner?: string;
   retainCount: number;
   timer: NodeJS.Timeout | null;
@@ -727,6 +729,7 @@ interface GitHubPollTarget {
 
 interface ResolvedPullRequestCandidate {
   status: CurrentPullRequestStatus;
+  headSha?: string;
   headRepositoryOwner?: string;
 }
 
@@ -868,6 +871,7 @@ export function createGitHubService(options: CreateGitHubServiceOptions = {}): G
   function getPollTargetKey(target: {
     cwd: string;
     headRef: string;
+    headSha?: string;
     headRepositoryOwner?: string;
   }): string {
     return buildCacheKey({
@@ -875,6 +879,7 @@ export function createGitHubService(options: CreateGitHubServiceOptions = {}): G
       method: "getCurrentPullRequestStatus",
       args: {
         headRef: target.headRef,
+        headSha: target.headSha,
         headRepositoryOwner: target.headRepositoryOwner,
       },
     });
@@ -883,6 +888,7 @@ export function createGitHubService(options: CreateGitHubServiceOptions = {}): G
   function updatePollTargetAfterSuccess(update: {
     cwd: string;
     headRef: string;
+    headSha?: string;
     headRepositoryOwner?: string;
     status: CurrentPullRequestStatus | null;
     notify: boolean;
@@ -932,6 +938,7 @@ export function createGitHubService(options: CreateGitHubServiceOptions = {}): G
       await api.getCurrentPullRequestStatus({
         cwd: target.cwd,
         headRef: target.headRef,
+        headSha: target.headSha,
         headRepositoryOwner: target.headRepositoryOwner,
         reason: "self-heal-github",
       });
@@ -1095,6 +1102,7 @@ export function createGitHubService(options: CreateGitHubServiceOptions = {}): G
         method: "getCurrentPullRequestStatus",
         args: {
           headRef: input.headRef,
+          headSha: input.headSha,
           headRepositoryOwner: input.headRepositoryOwner,
         },
         readOptions: input,
@@ -1102,6 +1110,7 @@ export function createGitHubService(options: CreateGitHubServiceOptions = {}): G
           const status = await resolveCurrentPullRequestView({
             cwd: input.cwd,
             headRef: input.headRef,
+            headSha: input.headSha,
             headRepositoryOwner: input.headRepositoryOwner,
             run,
           });
@@ -1111,6 +1120,7 @@ export function createGitHubService(options: CreateGitHubServiceOptions = {}): G
         updatePollTargetAfterSuccess({
           cwd: input.cwd,
           headRef: input.headRef,
+          headSha: input.headSha,
           headRepositoryOwner: input.headRepositoryOwner,
           status,
           notify: input.reason === "self-heal-github",
@@ -1502,6 +1512,7 @@ export function createGitHubService(options: CreateGitHubServiceOptions = {}): G
         target = {
           cwd: input.cwd,
           headRef: input.headRef,
+          headSha: input.headSha,
           headRepositoryOwner: input.headRepositoryOwner,
           retainCount: 0,
           timer: null,
@@ -1869,6 +1880,7 @@ function isStatusCheckRollupPermissionError(error: unknown): boolean {
 async function resolveCurrentPullRequestView(options: {
   cwd: string;
   headRef: string;
+  headSha?: string;
   headRepositoryOwner?: string;
   run: (args: string[], options: GitHubCommandRunnerOptions) => Promise<string>;
 }): Promise<CurrentPullRequestStatus | null> {
@@ -1877,6 +1889,7 @@ async function resolveCurrentPullRequestView(options: {
     ? pickPullRequestCandidate({
         candidates: [viewCandidate],
         headRef: options.headRef,
+        headSha: options.headSha,
         headRepositoryOwner: options.headRepositoryOwner,
       })
     : null;
@@ -1893,12 +1906,13 @@ async function resolveCurrentPullRequestView(options: {
     const forkOwner = repo?.owner?.login;
     const parentOwner = repo?.parent?.owner?.login;
     const parentName = repo?.parent?.name;
-    if (!forkOwner || !parentOwner || !parentName) {
+    if (!forkOwner) {
       return null;
     }
-
-    listHeadRef = `${forkOwner}:${options.headRef}`;
-    listRepo = `${parentOwner}/${parentName}`;
+    if (parentOwner && parentName) {
+      listHeadRef = `${forkOwner}:${options.headRef}`;
+      listRepo = `${parentOwner}/${parentName}`;
+    }
     headRepositoryOwner = forkOwner;
   }
 
@@ -1911,6 +1925,7 @@ async function resolveCurrentPullRequestView(options: {
   const match = pickPullRequestCandidate({
     candidates,
     headRef: options.headRef,
+    headSha: options.headSha,
     headRepositoryOwner,
   });
   return match?.status ?? null;
@@ -2173,8 +2188,10 @@ function toCurrentPullRequestCandidate(
     return null;
   }
   const headRepositoryOwner = item.headRepositoryOwner?.login;
+  const headSha = item.headRefOid;
   return {
     status,
+    ...(headSha ? { headSha } : {}),
     ...(headRepositoryOwner ? { headRepositoryOwner } : {}),
   };
 }
@@ -2190,26 +2207,45 @@ function hasResolvedRepoIdentity(status: CurrentPullRequestStatus): boolean {
 function pickPullRequestCandidate(options: {
   candidates: ResolvedPullRequestCandidate[];
   headRef: string;
+  headSha?: string;
   headRepositoryOwner?: string;
 }): ResolvedPullRequestCandidate | null {
   const matching = options.candidates.filter((candidate) => {
     if (!isCandidateForHeadRef(candidate, options.headRef)) {
       return false;
     }
+    if (
+      candidate.status.state !== "open" &&
+      (!options.headSha || candidate.headSha !== options.headSha)
+    ) {
+      return false;
+    }
     if (!options.headRepositoryOwner) {
       return true;
     }
     return candidate.headRepositoryOwner === options.headRepositoryOwner;
   });
-  matching.sort(comparePullRequestCandidatePreference);
+  matching.sort((left, right) =>
+    comparePullRequestCandidatePreference(left, right, options.headSha),
+  );
   return matching[0] ?? null;
 }
 
 function comparePullRequestCandidatePreference(
   left: ResolvedPullRequestCandidate,
   right: ResolvedPullRequestCandidate,
+  headSha?: string,
 ): number {
-  return getPullRequestStateRank(left.status) - getPullRequestStateRank(right.status);
+  const stateRank = getPullRequestStateRank(left.status) - getPullRequestStateRank(right.status);
+  if (stateRank !== 0) {
+    return stateRank;
+  }
+  const leftExact = headSha !== undefined && left.headSha === headSha;
+  const rightExact = headSha !== undefined && right.headSha === headSha;
+  if (leftExact !== rightExact) {
+    return leftExact ? -1 : 1;
+  }
+  return 0;
 }
 
 function getPullRequestStateRank(status: CurrentPullRequestStatus): number {
diff --git a/packages/server/src/services/gitlab-service.test.ts b/packages/server/src/services/gitlab-service.test.ts
index dc9cc5294..3f930a720 100644
--- a/packages/server/src/services/gitlab-service.test.ts
+++ b/packages/server/src/services/gitlab-service.test.ts
@@ -33,6 +33,24 @@ function makeService(responder: Responder, overrides: Partial<CreateGitLabServic
   return { service, calls };
 }
 
+function currentMrListArgs(headRef: string): string[] {
+  return [
+    "mr",
+    "list",
+    "--all",
+    "--source-branch",
+    headRef,
+    "--order",
+    "updated_at",
+    "--sort",
+    "desc",
+    "--per-page",
+    "100",
+    "-F",
+    "json",
+  ];
+}
+
 function gitlabAutoMergeStatus(
   overrides: Partial<GitLabStatusFacts> = {},
 ): PullRequestCommandStatus {
@@ -60,6 +78,7 @@ const OPEN_MR = {
   state: "opened",
   source_branch: "release/v0.4.0",
   target_branch: "main",
+  sha: "1111111111111111111111111111111111111111",
   source_project_id: 101,
   target_project_id: 101,
   draft: false,
@@ -231,7 +250,9 @@ const DISCUSSIONS = [
 
 describe("createGitLabService", () => {
   it("maps a glab merge request view to the neutral current PR status", async () => {
-    const { service, calls } = makeService(() => ok(JSON.stringify(OPEN_MR)));
+    const { service, calls } = makeService((args) =>
+      ok(JSON.stringify(args[1] === "list" ? [OPEN_MR] : OPEN_MR)),
+    );
 
     const status = await service.getCurrentPullRequestStatus({
       cwd: "/repo",
@@ -261,23 +282,26 @@ describe("createGitLabService", () => {
       pipelineStatus: "success",
       mergeWhenPipelineSucceeds: false,
     });
-    expect(calls[0]).toEqual(["mr", "view", "release/v0.4.0", "-F", "json"]);
+    expect(calls[0]).toEqual(currentMrListArgs("release/v0.4.0"));
+    expect(calls[1]).toEqual(["mr", "view", "14", "-F", "json"]);
   });
 
   it("reports a conflicting merge request as CONFLICTING", async () => {
-    const { service } = makeService(() =>
-      ok(
-        JSON.stringify({ ...OPEN_MR, has_conflicts: true, detailed_merge_status: "broken_status" }),
-      ),
+    const conflicting = {
+      ...OPEN_MR,
+      source_branch: "x",
+      has_conflicts: true,
+      detailed_merge_status: "broken_status",
+    };
+    const { service } = makeService((args) =>
+      ok(JSON.stringify(args[1] === "list" ? [conflicting] : conflicting)),
     );
     const status = await service.getCurrentPullRequestStatus({ cwd: "/repo", headRef: "x" });
     expect(status?.mergeable).toBe("CONFLICTING");
   });
 
   it("returns null when no merge request exists for the branch", async () => {
-    const { service } = makeService(() => {
-      throw { code: 1, stderr: "no open merge request available for 'feature/x'" };
-    });
+    const { service } = makeService(() => ok("[]"));
     const status = await service.getCurrentPullRequestStatus({
       cwd: "/repo",
       headRef: "feature/x",
@@ -285,6 +309,61 @@ describe("createGitLabService", () => {
     expect(status).toBeNull();
   });
 
+  it("selects a terminal merge request only when its head SHA matches the checkout", async () => {
+    const branch = "dev";
+    const checkoutSha = "2222222222222222222222222222222222222222";
+    const newestStale = {
+      ...OPEN_MR,
+      iid: 271,
+      state: "merged",
+      source_branch: branch,
+      sha: "1111111111111111111111111111111111111111",
+      updated_at: "2026-07-17T12:00:00.000Z",
+    };
+    const exactOlder = {
+      ...OPEN_MR,
+      iid: 270,
+      state: "merged",
+      source_branch: branch,
+      sha: checkoutSha,
+      updated_at: "2026-07-16T12:00:00.000Z",
+    };
+    const { service, calls } = makeService((args) => {
+      if (args[1] === "list") return ok(JSON.stringify([newestStale, exactOlder]));
+      if (args[1] === "view" && args[2] === "270") return ok(JSON.stringify(exactOlder));
+      if (args[0] === "api") return ok("{}");
+      throw new Error(`unexpected call: ${args.join(" ")}`);
+    });
+
+    const status = await service.getCurrentPullRequestStatus({
+      cwd: "/repo",
+      headRef: branch,
+      headSha: checkoutSha,
+    });
+
+    expect(status?.number).toBe(270);
+    expect(calls[1]).toEqual(["mr", "view", "270", "-F", "json"]);
+  });
+
+  it("does not attach the latest historical merge request after a reused branch advances", async () => {
+    const stale = {
+      ...OPEN_MR,
+      state: "merged",
+      source_branch: "dev",
+      sha: "1111111111111111111111111111111111111111",
+    };
+    const { service, calls } = makeService(() => ok(JSON.stringify([stale])));
+
+    await expect(
+      service.getCurrentPullRequestStatus({
+        cwd: "/repo",
+        headRef: "dev",
+        headSha: "2222222222222222222222222222222222222222",
+      }),
+    ).resolves.toBeNull();
+    expect(calls).toEqual([currentMrListArgs("dev")]);
+  });
+
   it("looks up a numeric current branch through the source-branch list filter", async () => {
     const numericBranchMr = {
       ...OPEN_MR,
@@ -313,6 +392,7 @@ describe("createGitLabService", () => {
     const status = await service.getCurrentPullRequestStatus({
       cwd: "/repo",
       headRef: "1234",
+      headSha: "2222222222222222222222222222222222222222",
     });
 
     expect(status).toMatchObject({
@@ -320,7 +400,7 @@ describe("createGitLabService", () => {
       title: "Fix numeric branch",
       headRefName: "1234",
     });
-    expect(calls[0]).toEqual(["mr", "list", "--source-branch", "1234", "-F", "json"]);
+    expect(calls[0]).toEqual(currentMrListArgs("1234"));
     expect(calls[1]).toEqual(["mr", "view", "21", "-F", "json"]);
     expect(calls).not.toContainEqual(["mr", "view", "1234", "-F", "json"]);
   });
@@ -342,7 +422,7 @@ describe("createGitLabService", () => {
     });
 
     expect(status).toBeNull();
-    expect(calls).toEqual([["mr", "list", "--source-branch", "1234", "-F", "json"]]);
+    expect(calls).toEqual([currentMrListArgs("1234")]);
   });
 
   it("lists merge requests as neutral PR summaries", async () => {
@@ -549,17 +629,16 @@ describe("createGitLabService", () => {
   });
 
   it("surfaces the head pipeline id and url on the gitlab status facts", async () => {
-    const { service } = makeService(() =>
-      ok(
-        JSON.stringify({
-          ...OPEN_MR,
-          head_pipeline: {
-            id: 306,
-            status: "running",
-            web_url: "https://gitlab.example.com/example-group/example-project/-/pipelines/306",
-          },
-        }),
-      ),
+    const pipelineMr = {
+      ...OPEN_MR,
+      head_pipeline: {
+        id: 306,
+        status: "running",
+        web_url: "https://gitlab.example.com/example-group/example-project/-/pipelines/306",
+      },
+    };
+    const { service } = makeService((args) =>
+      ok(JSON.stringify(args[1] === "list" ? [pipelineMr] : pipelineMr)),
     );
 
     const status = await service.getCurrentPullRequestStatus({
@@ -682,6 +761,7 @@ describe("createGitLabService", () => {
 
   it("populates approval counts from the approvals endpoint", async () => {
     const { service, calls } = makeService((args) => {
+      if (args[0] === "mr" && args[1] === "list") return ok(JSON.stringify([OPEN_MR]));
       if (args[0] === "mr" && args[1] === "view") return ok(JSON.stringify(OPEN_MR));
       if (args[0] === "api" && args[1].endsWith("/approvals")) return ok(JSON.stringify(APPROVALS));
       throw new Error(`unexpected call: ${args.join(" ")}`);
@@ -697,7 +777,7 @@ describe("createGitLabService", () => {
       approvalsRequired: 2,
       approvalsGiven: 1,
     });
-    expect(calls[1]).toEqual([
+    expect(calls[2]).toEqual([
       "api",
       "projects/example-group%2Fexample-project/merge_requests/14/approvals",
     ]);
@@ -705,6 +785,7 @@ describe("createGitLabService", () => {
 
   it("falls back to zero approvals when the approvals endpoint returns an error", async () => {
     const { service } = makeService((args) => {
+      if (args[0] === "mr" && args[1] === "list") return ok(JSON.stringify([OPEN_MR]));
       if (args[0] === "mr" && args[1] === "view") return ok(JSON.stringify(OPEN_MR));
       throw { code: 1, stderr: "500 Internal Server Error" };
     });
diff --git a/packages/server/src/services/gitlab-service.ts b/packages/server/src/services/gitlab-service.ts
index 204c99dab..dae4cb2b4 100644
--- a/packages/server/src/services/gitlab-service.ts
+++ b/packages/server/src/services/gitlab-service.ts
@@ -149,6 +149,7 @@ const GitLabMergeRequestSchema = z
     state: z.string(),
     source_branch: z.string(),
     target_branch: z.string(),
+    sha: z.string().optional(),
     source_project_id: z.number().nullable().optional(),
     target_project_id: z.number().nullable().optional(),
     draft: z.boolean().optional(),
@@ -861,16 +862,26 @@ export function createGitLabService(options: CreateGitLabServiceOptions = {}): F
     return runJson(["mr", "view", ref, "-F", "json"], { cwd }, GitLabMergeRequestSchema);
   }
 
-  function isNumericBranchRef(ref: string): boolean {
-    return /^[0-9]+$/.test(ref);
-  }
-
-  async function listOpenMergeRequestsBySourceBranch(
+  async function listMergeRequestsBySourceBranch(
     cwd: string,
     sourceBranch: string,
   ): Promise<GitLabMergeRequest[]> {
     return runJson(
-      ["mr", "list", "--source-branch", sourceBranch, "-F", "json"],
+      [
+        "mr",
+        "list",
+        "--all",
+        "--source-branch",
+        sourceBranch,
+        "--order",
+        "updated_at",
+        "--sort",
+        "desc",
+        "--per-page",
+        "100",
+        "-F",
+        "json",
+      ],
       { cwd },
       z.array(GitLabMergeRequestSchema),
     );
@@ -879,16 +890,17 @@ export function createGitLabService(options: CreateGitLabServiceOptions = {}): F
   async function resolveCurrentMergeRequest(
     cwd: string,
     headRef: string,
+    headSha?: string,
   ): Promise<GitLabMergeRequest | null> {
-    if (!isNumericBranchRef(headRef)) {
-      return viewMergeRequest(cwd, headRef);
-    }
-
-    const mergeRequests = await listOpenMergeRequestsBySourceBranch(cwd, headRef);
+    const mergeRequests = await listMergeRequestsBySourceBranch(cwd, headRef);
+    const candidates = mergeRequests.filter((mr) => mr.source_branch === headRef);
     const match =
-      mergeRequests.find(
-        (mr) => mr.source_branch === headRef && mapMergeRequestState(mr.state) === "open",
-      ) ?? null;
+      candidates.find((mr) => mapMergeRequestState(mr.state) === "open") ??
+      candidates.find(
+        (mr) =>
+          mapMergeRequestState(mr.state) !== "open" && headSha !== undefined && mr.sha === headSha,
+      ) ??
+      null;
     return match ? viewMergeRequest(cwd, String(match.iid)) : null;
   }
 
@@ -1004,7 +1016,7 @@ export function createGitLabService(options: CreateGitLabServiceOptions = {}): F
 
     async getCurrentPullRequestStatus(input): Promise<CurrentPullRequestStatus | null> {
       try {
-        const mr = await resolveCurrentMergeRequest(input.cwd, input.headRef);
+        const mr = await resolveCurrentMergeRequest(input.cwd, input.headRef, input.headSha);
         if (!mr) {
           return null;
         }
diff --git a/packages/server/src/utils/checkout-git.test.ts b/packages/server/src/utils/checkout-git.test.ts
index cf07bfc97..c28586d8a 100644
--- a/packages/server/src/utils/checkout-git.test.ts
+++ b/packages/server/src/utils/checkout-git.test.ts
@@ -48,7 +48,11 @@ import { startGitCommandMetrics, stopGitCommandMetrics } from "./run-git-command
 import { createForgeResolver } from "../services/forge-resolver.js";
 import { GitHubCommandError, GitHubCliMissingError } from "../services/github-service.js";
 import type { CurrentPullRequestStatus, ForgeService } from "../services/forge-service.js";
-import { TeaAuthenticationError, TeaCliMissingError } from "../services/gitea-service.js";
+import {
+  TeaAuthenticationError,
+  TeaCliMissingError,
+  TeaCommandError,
+} from "../services/gitea-service.js";
 import {
   createWorktree as createWorktreePrimitive,
   type CreateWorktreeOptions,
@@ -161,6 +165,7 @@ function createPullRequestStatus(overrides?: Partial<CurrentPullRequestStatus>)
 
 interface RequestedPullRequestTarget {
   headRef: string;
+  headSha?: string;
   headRepositoryOwner?: string;
 }
 
@@ -176,6 +181,7 @@ function createGitHubServiceRecordingPullRequestTargets(
   github.getCurrentPullRequestStatus = async (request) => {
     options.requestedTargets.push({
       headRef: request.headRef,
+      ...(request.headSha ? { headSha: request.headSha } : {}),
       ...(request.headRepositoryOwner ? { headRepositoryOwner: request.headRepositoryOwner } : {}),
     });
     return createPullRequestStatus({
@@ -2341,7 +2347,8 @@ const x = 1;
 
     const lookupTarget = await readPullRequestLookupTargetFromFacts(repoDir, paseoHome);
 
-    expect(lookupTarget).toEqual({ headRef: "refactor/workspace-scripts" });
+    expect(lookupTarget).toMatchObject({ headRef: "refactor/workspace-scripts" });
+    expect(lookupTarget?.headSha).toMatch(/^[0-9a-f]{40}$/);
   });
 
   it("keeps the local branch lookup when origin tracking uses the same head name", async () => {
@@ -2356,7 +2363,8 @@ const x = 1;
 
     const lookupTarget = await readPullRequestLookupTargetFromFacts(repoDir, paseoHome);
 
-    expect(lookupTarget).toEqual({ headRef: "feature" });
+    expect(lookupTarget).toMatchObject({ headRef: "feature" });
+    expect(lookupTarget?.headSha).toMatch(/^[0-9a-f]{40}$/);
   });
 
   it("does not attach an owner when the tracked remote is the same GitHub repository", async () => {
@@ -2378,7 +2386,8 @@ const x = 1;
 
     const lookupTarget = await readPullRequestLookupTargetFromFacts(repoDir, paseoHome);
 
-    expect(lookupTarget).toEqual({ headRef: "refactor/workspace-scripts" });
+    expect(lookupTarget).toMatchObject({ headRef: "refactor/workspace-scripts" });
+    expect(lookupTarget?.headSha).toMatch(/^[0-9a-f]{40}$/);
   });
 
   it("keeps the fork owner when same-repo comparison is indeterminate", async () => {
@@ -2396,7 +2405,8 @@ const x = 1;
 
     const lookupTarget = await readPullRequestLookupTargetFromFacts(repoDir, paseoHome);
 
-    expect(lookupTarget).toEqual({ headRef: "main", headRepositoryOwner: "chethanuk" });
+    expect(lookupTarget).toMatchObject({ headRef: "main", headRepositoryOwner: "chethanuk" });
+    expect(lookupTarget?.headSha).toMatch(/^[0-9a-f]{40}$/);
   });
 
   it("uses the configured push remote for fork PR lookup when upstream is absent", async () => {
@@ -2425,8 +2435,11 @@ const x = 1;
     );
 
     expect(getBranchUpstream(repoDir)).toBeNull();
-    expect(factsTarget).toEqual({ headRef: "main", headRepositoryOwner: "chethanuk" });
-    expect(requestedTargets).toEqual([{ headRef: "main", headRepositoryOwner: "chethanuk" }]);
+    expect(factsTarget).toMatchObject({ headRef: "main", headRepositoryOwner: "chethanuk" });
+    expect(factsTarget?.headSha).toMatch(/^[0-9a-f]{40}$/);
+    expect(requestedTargets).toEqual([
+      expect.objectContaining({ headRef: "main", headRepositoryOwner: "chethanuk" }),
+    ]);
   });
 
   it("keeps the local branch lookup when same-repo tracking points at the base branch", async () => {
@@ -2441,7 +2454,8 @@ const x = 1;
 
     const lookupTarget = await readPullRequestLookupTargetFromFacts(repoDir, paseoHome);
 
-    expect(lookupTarget).toEqual({ headRef: "tender-parrot" });
+    expect(lookupTarget).toMatchObject({ headRef: "tender-parrot" });
+    expect(lookupTarget?.headSha).toMatch(/^[0-9a-f]{40}$/);
   });
 
   it("derives the same origin tracked head for on-demand PR status reads", async () => {
@@ -2495,7 +2509,9 @@ const x = 1;
 
     const status = await getPullRequestStatus(repoDir, github);
 
-    expect(requestedTargets).toEqual([{ headRef: "main", headRepositoryOwner: "chethanuk" }]);
+    expect(requestedTargets).toEqual([
+      expect.objectContaining({ headRef: "main", headRepositoryOwner: "chethanuk" }),
+    ]);
     expect(status.status?.number).toBe(345);
     expect(status.status?.headRefName).toBe("main");
   });
@@ -2544,6 +2560,33 @@ const x = 1;
     expect(callCount).toBe(1);
   });
 
+  it("does not reuse a PR status cache entry after HEAD changes on the same branch", async () => {
+    execFileSync("git", ["checkout", "-b", "feature"], { cwd: repoDir });
+    execFileSync("git", ["remote", "add", "origin", "https://github.com/getpaseo/paseo.git"], {
+      cwd: repoDir,
+    });
+
+    const requestedShas: string[] = [];
+    const github = createGitHubServiceForStatus(null);
+    github.getCurrentPullRequestStatus = async (options) => {
+      if (options.headSha) requestedShas.push(options.headSha);
+      return createPullRequestStatus({
+        url: `https://github.com/getpaseo/paseo/pull/${requestedShas.length}`,
+      });
+    };
+
+    const first = await getPullRequestStatus(repoDir, github);
+    writeFileSync(join(repoDir, "next.txt"), "next\n");
+    execFileSync("git", ["add", "next.txt"], { cwd: repoDir });
+    execFileSync("git", ["commit", "-m", "next commit"], { cwd: repoDir });
+    const second = await getPullRequestStatus(repoDir, github);
+
+    expect(first.status?.url).toContain("/pull/1");
+    expect(second.status?.url).toContain("/pull/2");
+    expect(requestedShas).toHaveLength(2);
+    expect(requestedShas[0]).not.toBe(requestedShas[1]);
+  });
+
   it("passes forced PR status reads through to the GitHub service", async () => {
     execFileSync("git", ["checkout", "-b", "feature"], { cwd: repoDir });
     execFileSync("git", ["remote", "add", "origin", "https://github.com/getpaseo/paseo.git"], {
@@ -2637,6 +2680,41 @@ const x = 1;
     }
   });
 
+  it("keeps stale PR status when a Gitea-family refresh hits a transient command error", async () => {
+    execFileSync("git", ["checkout", "-b", "feature"], { cwd: repoDir });
+    execFileSync("git", ["remote", "add", "origin", "https://gitea.example.com/acme/repo.git"], {
+      cwd: repoDir,
+    });
+
+    __setPullRequestStatusCacheTtlForTests(50);
+    try {
+      let callCount = 0;
+      const service = createGitHubServiceForStatus(null);
+      service.getCurrentPullRequestStatus = async () => {
+        callCount += 1;
+        if (callCount === 1) {
+          return createPullRequestStatus({ url: "https://gitea.example.com/acme/repo/pulls/7" });
+        }
+        throw new TeaCommandError({
+          args: ["pr", "list"],
+          cwd: repoDir,
+          exitCode: 1,
+          stderr: "request timed out",
+        });
+      };
+
+      const fresh = await getPullRequestStatus(repoDir, service);
+      await sleep(80);
+      const stale = await getPullRequestStatus(repoDir, service);
+
+      expect(stale).toEqual(fresh);
+      expect(stale.status?.url).toContain("/pulls/7");
+      expect(callCount).toBe(2);
+    } finally {
+      __resetPullRequestStatusCacheForTests();
+    }
+  });
+
   it("does not use stale PR status fallback for forced GitHub errors", async () => {
     execFileSync("git", ["checkout", "-b", "feature"], { cwd: repoDir });
     execFileSync("git", ["remote", "add", "origin", "https://github.com/getpaseo/paseo.git"], {
diff --git a/packages/server/src/utils/checkout-git.ts b/packages/server/src/utils/checkout-git.ts
index 331d2413f..1b0752ede 100644
--- a/packages/server/src/utils/checkout-git.ts
+++ b/packages/server/src/utils/checkout-git.ts
@@ -7,7 +7,7 @@ import type { Logger } from "pino";
 import type { ParsedDiffFile } from "../server/utils/diff-highlighter.js";
 import { parseAndHighlightDiff } from "../server/utils/diff-highlighter.js";
 import { parseGitHubRepoFromRemote } from "../server/workspace-git-metadata.js";
-import { GitHubCommandError, createGitHubService } from "../services/github-service.js";
+import { createGitHubService } from "../services/github-service.js";
 import type {
   CurrentPullRequestStatus,
   ForgeAuthState,
@@ -15,7 +15,11 @@ import type {
   ForgeSpecificStatusFacts,
   PullRequestMergeable,
 } from "../services/forge-service.js";
-import { ForgeAuthenticationError, ForgeCliMissingError } from "../services/forge-cli-command.js";
+import {
+  ForgeAuthenticationError,
+  ForgeCliMissingError,
+  ForgeCommandError,
+} from "../services/forge-cli-command.js";
 import { parseGitRevParsePath, resolveGitRevParsePath } from "./git-rev-parse-path.js";
 import { runGitCommand } from "./run-git-command.js";
 import { isPaseoOwnedWorktreeCwd, resolvePaseoWorktreesBaseRoot } from "./worktree.js";
@@ -67,6 +71,7 @@ interface CheckoutReadCacheOptions {
 
 interface PullRequestStatusLookupTarget {
   headRef: string;
+  headSha?: string;
   headRepositoryOwner?: string;
 }
 
@@ -116,8 +121,8 @@ function createShortstatCache(ttlMs: number) {
   });
 }
 
-function getPullRequestStatusCacheKey(cwd: string): string {
-  return resolve(cwd);
+function getPullRequestStatusCacheKey(cwd: string, headSha: string | null): string {
+  return `${resolve(cwd)}\u0000${headSha ?? ""}`;
 }
 
 function rememberPullRequestStatus(cacheKey: string, status: PullRequestStatusResult): void {
@@ -829,6 +834,38 @@ export async function getCurrentBranch(cwd: string): Promise<string | null> {
   }
 }
 
+async function getCurrentHeadSha(cwd: string, context?: CheckoutContext): Promise<string | null> {
+  const knownSha = context?.facts?.isGit
+    ? context.facts.pullRequestLookupTarget?.headSha
+    : undefined;
+  if (knownSha) {
+    return knownSha;
+  }
+  try {
+    const { stdout } = await runGitCommand(["rev-parse", "HEAD"], {
+      cwd,
+      envOverlay: READ_ONLY_GIT_ENV,
+      logger: context?.logger,
+    });
+    const sha = stdout.trim();
+    return sha.length > 0 ? sha : null;
+  } catch {
+    return null;
+  }
+}
+
+async function addHeadShaToPullRequestLookupTarget(
+  cwd: string,
+  target: PullRequestStatusLookupTarget | null,
+  context?: CheckoutContext,
+): Promise<PullRequestStatusLookupTarget | null> {
+  if (!target) {
+    return null;
+  }
+  const headSha = await getCurrentHeadSha(cwd, context);
+  return headSha ? { ...target, headSha } : target;
+}
+
 async function getRebaseHeadBranch(cwd: string): Promise<string | null> {
   const paths = ["rebase-merge/head-name", "rebase-apply/head-name"];
   const results = await Promise.all(
@@ -1761,6 +1798,11 @@ export async function getCheckoutSnapshotFacts(
         context,
       )) ?? pullRequestLookupTarget;
   }
+  pullRequestLookupTarget = await addHeadShaToPullRequestLookupTarget(
+    cwd,
+    pullRequestLookupTarget,
+    context,
+  );
 
   return {
     isGit: true,
@@ -3402,7 +3444,8 @@ export async function getPullRequestStatus(
   options?: CheckoutReadCacheOptions,
   context?: CheckoutContext,
 ): Promise<PullRequestStatusResult> {
-  const cacheKey = getPullRequestStatusCacheKey(cwd);
+  const headSha = await getCurrentHeadSha(cwd, context);
+  const cacheKey = getPullRequestStatusCacheKey(cwd, headSha);
   if (!options?.force) {
     const cached = pullRequestStatusCache.get(cacheKey);
     if (cached) {
@@ -3415,14 +3458,14 @@ export async function getPullRequestStatus(
     }
   }
 
-  const lookup = getPullRequestStatusUncached(cwd, forgeService, options, context)
+  const lookup = getPullRequestStatusUncached(cwd, forgeService, options, context, headSha)
     .then((status) => {
       pullRequestStatusCache.set(cacheKey, status);
       rememberPullRequestStatus(cacheKey, status);
       return status;
     })
     .catch((error) => {
-      if (!options?.force && error instanceof GitHubCommandError) {
+      if (!options?.force && error instanceof ForgeCommandError) {
         const stale = lastSuccessfulPullRequestStatus.get(cacheKey);
         if (stale) {
           return stale;
@@ -3443,6 +3486,7 @@ async function getPullRequestStatusUncached(
   forgeService: ForgeService,
   options?: CheckoutReadCacheOptions,
   context?: CheckoutContext,
+  headSha?: string | null,
 ): Promise<PullRequestStatusResult> {
   if (context?.facts?.isGit === false) {
     return buildPullRequestStatusResult(null, "no_remote");
@@ -3455,7 +3499,11 @@ async function getPullRequestStatusUncached(
     return buildPullRequestStatusResult(null, "no_remote");
   }
   try {
-    const lookupTarget = await resolvePullRequestStatusLookupTarget(cwd, head, context);
+    const resolvedLookupTarget = await resolvePullRequestStatusLookupTarget(cwd, head, context);
+    const lookupTarget =
+      headSha && !resolvedLookupTarget.headSha
+        ? { ...resolvedLookupTarget, headSha }
+        : resolvedLookupTarget;
     let status: CurrentPullRequestStatus | null;
     if (options?.force) {
       const reason = options.reason;