diff --git a/tests/phase.test.cjs b/tests/phase.test.cjs
index 5ef746b..4f0ba03 100644
--- a/tests/phase.test.cjs
+++ b/tests/phase.test.cjs
@@ -3793,3 +3793,14 @@ describe('Phase 32 runtime-freshness helper', () => {
 // ─────────────────────────────────────────────────────────────────────────────
 // milestone complete command
 // ─────────────────────────────────────────────────────────────────────────────
+
+describe('proof staleness lane', () => {
+  test('tracked proof runners pin only git objects that still exist in this repository', () => {
+    const result = spawnSync(process.execPath, [path.join(__dirname, 'run-proof.cjs')], {
+      encoding: 'utf-8',
+      cwd: path.join(__dirname, '..'),
+    });
+    assert.strictEqual(result.status, 0, `${result.stdout}\n${result.stderr}`);
+    assert.match(result.stdout, /CLEAN \(/);
+  });
+});
diff --git a/tests/proof/phase05-decision-git-safety.cjs b/tests/proof/phase05-decision-git-safety.cjs
index 9f04187..ac0e69e 100644
--- a/tests/proof/phase05-decision-git-safety.cjs
+++ b/tests/proof/phase05-decision-git-safety.cjs
@@ -19,7 +19,7 @@ const RECOVERY_BRANCH = 'recovery/workspine-relaunch-20260809';
 const UPSTREAM = `origin/${RECOVERY_BRANCH}`;
 const RECOVERY_REF = `refs/heads/${RECOVERY_BRANCH}`;
 const MAIN_REF = 'refs/heads/main';
-const MAIN_REF_SHA = 'b7c8b7bd54e1764826cb55763440a676181bc851';
+const MAIN_REF_SHA = 'ab8374a231fc038cec662b636653f2e0397f2289';
 const TARBALL_SHA256 = '86cd25cd7bf6d44a6e60d3a7063afe31a76c2ba15d0f50709b63a2143f8301b0';
 const PACKAGE_JSON_SHA256 = 'ec2a562ae51b7e14087c1d14c9eb6d48472e1ac4da9033b410418695a9788058';
 const README_SHA256 = 'c96ff2362341b0ee7599ec4db72b0bbe31a654934afe136f20927b0dfe37cc60';