diff --git a/skill/scripts/context.mjs b/skill/scripts/context.mjs
index 1df6415d7..8146da298 100644
--- a/skill/scripts/context.mjs
+++ b/skill/scripts/context.mjs
@@ -1315,9 +1315,12 @@ const STOP_REVIEW_PROVIDERS = new Set(['claude-code', 'codex', 'agents', 'grok']
 
 // Harness project settings are discovered by walking up from the resolved
 // project root. Its hook manifest can live at an enclosing git root, so
-// checking only projectRoot/repoRoot produces a false
-// MANUAL_DETECTOR_REQUIRED directive. Starting from projectRoot also prevents
-// an explicit target from borrowing an unrelated manifest near the caller.
+// checking only projectRoot produces a false MANUAL_DETECTOR_REQUIRED
+// directive. Starting from projectRoot also prevents an explicit target from
+// borrowing an unrelated manifest near the caller. The walk itself is the
+// authority: do not append repoRoot afterward, because resolveProject can
+// retain an outer workspace root for a target inside an independent nested
+// Git repository.
 function hookManifestSearchRoots(ctx) {
   const roots = [];
   const seen = new Set();
@@ -1339,8 +1342,6 @@ function hookManifestSearchRoots(ctx) {
     current = parent;
   }
 
-  add(ctx.projectRoot);
-  add(ctx.repoRoot);
   return roots;
 }
 
diff --git a/tests/context.test.mjs b/tests/context.test.mjs
index 48355d218..295c5c178 100644
--- a/tests/context.test.mjs
+++ b/tests/context.test.mjs
@@ -1266,6 +1266,38 @@ describe('context.mjs CLI', () => {
     assert.match(res.stdout, /MANUAL_DETECTOR_REQUIRED:/);
   });
 
+  it('does not borrow an outer workspace hook for a target in a nested Git repository', () => {
+    const scripts = path.join(scratch, 'bundle', 'skills', 'impeccable', 'scripts');
+    stageContextBundle(scripts, { providerId: 'claude-code' });
+
+    const repo = path.join(scratch, 'repo');
+    const target = path.join(repo, 'repos', 'standalone');
+    fs.mkdirSync(path.join(repo, '.git'), { recursive: true });
+    fs.mkdirSync(path.join(repo, '.claude'), { recursive: true });
+    fs.mkdirSync(path.join(target, '.git'), { recursive: true });
+    fs.mkdirSync(path.join(target, 'src'), { recursive: true });
+    fs.writeFileSync(path.join(repo, 'package.json'), JSON.stringify({ private: true, workspaces: ['repos/*'] }));
+    fs.writeFileSync(path.join(repo, '.claude', 'settings.local.json'), JSON.stringify({
+      hooks: { Stop: [{ hooks: [{ command: 'node .claude/skills/impeccable/scripts/hook.mjs' }] }] },
+    }));
+    fs.writeFileSync(path.join(target, 'package.json'), JSON.stringify({ name: 'standalone' }));
+    fs.writeFileSync(path.join(target, 'PRODUCT.md'), '# Standalone\n');
+    fs.writeFileSync(path.join(target, 'src', 'App.jsx'), 'export default function App() { return "standalone"; }\n');
+
+    const res = spawnSync(process.execPath, [
+      path.join(scripts, 'context.mjs'),
+      '--target',
+      path.join('repos', 'standalone', 'src', 'App.jsx'),
+    ], {
+      cwd: repo,
+      encoding: 'utf8',
+      env: { ...process.env, IMPECCABLE_NO_UPDATE_CHECK: '1', IMPECCABLE_NO_STALENESS_CHECK: '1' },
+    });
+    assert.equal(res.status, 0, res.stderr);
+    assert.match(res.stdout, /"projectRoot": ".*\/repos\/standalone"/);
+    assert.match(res.stdout, /MANUAL_DETECTOR_REQUIRED:/);
+  });
+
   it('adds no detector directive when a per-edit-only hook is active', () => {
     const scripts = path.join(scratch, 'bundle', 'skills', 'impeccable', 'scripts');
     stageContextBundle(scripts, { providerId: 'cursor' });