@@ -2618,17 +2618,12 @@ describe("storage cleanup reports and local file policies", () => {
   it.live("compares the checked-out branch without a full status", () =>
     runCleanupTest(
       Effect.gen(function* () {
-        const { service, fs, repo, worktree, command, setThreads, fullStatusCalls } =
-          yield* cleanupFixture();
+        const { service, fs, repo, worktree, command, fullStatusCalls } = yield* cleanupFixture();
         const changed = { outcome: "kept", reason: "Repository or branch changed" };
         yield* command(worktree, ["checkout", "--detach"]);
         expect((yield* service.runNow).entries[0]).toMatchObject(changed);
         yield* command(worktree, ["switch", "--orphan", "other"]);
         expect((yield* service.runNow).entries[0]).toMatchObject(changed);
-        yield* command(worktree, ["switch", "-c", "(feature)", "feature"]);
-        setThreads([shell({ branch: "(feature)", worktreePath: worktree })]);
-        expect((yield* service.runNow).entries[0]).toMatchObject(changed);
-        setThreads([shell({ branch: "feature", worktreePath: worktree })]);
         yield* command(worktree, ["tag", "feature", "feature"]);
         // Newer Git refuses to create a tag named HEAD, but still reads one.
         yield* command(worktree, ["update-ref", "refs/tags/HEAD", "refs/heads/feature"]);
 
@@ -706,7 +706,7 @@ const make = Effect.gen(function* () {
     if (head === null) return true;
     const ref = head.exitCode === 0 ? head.stdout.trim() : "";
     const name = ref.startsWith("refs/heads/") ? ref.slice("refs/heads/".length).trim() : null;
-    return (name?.startsWith("(") ? null : name) !== branch;
+    return name !== branch;
   });
 
   // Git status and non-forced worktree removal both skip assume-unchanged and skip-worktree files.
 
@@ -709,6 +709,19 @@ it.effect("reads the project's own repository when the server inherited GIT_DIR"
   ).pipe(Effect.provide(layerTest)),
 );
 
+it.effect("reads a branch whose name starts with a parenthesis as attached", () =>
+  Effect.scoped(
+    Effect.gen(function* () {
+      const cwd = yield* makeTmpDir();
+      yield* initRepoWithCommit(cwd);
+      yield* git(cwd, ["switch", "-c", "(topic"]);
+      const driver = yield* GitVcsDriver.GitVcsDriver;
+      const status = yield* driver.statusDetailsLocal(cwd, { includeDivergence: false });
+      assert.equal(status.branch, "(topic");
+    }),
+  ).pipe(Effect.provide(layerTest)),
+);
+
 it.effect.each(["on a branch", "detached", "unborn"] as const)(
   "reads only the repository root for review requests that ignore the branch when %s",
   (state) =>
 
@@ -2322,7 +2322,7 @@ export const makeGitVcsDriverCore = Effect.fn("makeGitVcsDriverCore")(function*
       const line = statusRecords[index]!;
       if (line.startsWith("# branch.head ")) {
         const value = line.slice("# branch.head ".length).trim();
-        refName = value.startsWith("(") ? null : value;
+        refName = value === "(detached)" ? null : value;
         continue;
       }
       if (line.startsWith("# branch.upstream ")) {
Original file line number	Diff line number	Diff line change
`@@ -2322,7 +2322,7 @@ export const makeGitVcsDriverCore = Effect.fn("makeGitVcsDriverCore")(function*`
`2322`	`2322`	`const line = statusRecords[index]!;`
`2323`	`2323`	`if (line.startsWith("# branch.head ")) {`
`2324`	`2324`	`const value = line.slice("# branch.head ".length).trim();`
`2325`		`- refName = value.startsWith("(") ? null : value;`
	`2325`	`+ refName = value === "(detached)" ? null : value;`
`2326`	`2326`	`continue;`
`2327`	`2327`	`}`
`2328`	`2328`	`if (line.startsWith("# branch.upstream ")) {`