diff --git a/.ceremony/README.md b/.ceremony/README.md
index c080fb7..d8c6bf5 100644
--- a/.ceremony/README.md
+++ b/.ceremony/README.md
@@ -2,12 +2,13 @@
 
 Never edit these files ad hoc. The six manifest-listed doctrine files are
 byte-identical copies of
-[heavy-duty/ceremony](https://github.com/heavy-duty/ceremony) at 0.6.3, but
+[heavy-duty/ceremony](https://forgejo.heavyduty.builders/heavy-duty/ceremony) at 0.6.3, but
 stoke does not run `docs-sync` or re-diff the mirror in CI. Change doctrine
 upstream through its own flow, then re-vendor it here when the pin moves.
 
-The labels doctrine is vendored manually from heavy-duty/ceremony at 0.6.3
-because stoke keeps its own tag-driven `.forgejo/workflows/release.yml`.
+The labels doctrine is vendored manually from
+[heavy-duty/ceremony](https://forgejo.heavyduty.builders/heavy-duty/ceremony) at 0.6.3 because
+stoke keeps its own tag-driven `.forgejo/workflows/release.yml`.
 `docs-sync --fix` cannot run until or unless a future issue adopts the
 ceremony release-workflow pin; until then, doctrine updates must re-vendor
 the pinned manifest manually.
diff --git a/AGENTS.md b/AGENTS.md
index e047dee..df97449 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -1,7 +1,7 @@
 # AGENTS.md — start at .ceremony/
 
 This repository is governed by
-[heavy-duty/ceremony](https://github.com/heavy-duty/ceremony). Read
+[heavy-duty/ceremony](https://forgejo.heavyduty.builders/heavy-duty/ceremony). Read
 `.ceremony/AGENTS.md` first — it routes you to your role file, vendored
 beside it. Repo specifics (the review panel roster, the scope labels, what
 a drill means here, code conventions) live in CONTRIBUTING.md.
diff --git a/changelog.d/36.md b/changelog.d/36.md
new file mode 100644
index 0000000..43695a4
--- /dev/null
+++ b/changelog.d/36.md
@@ -0,0 +1 @@
+- Enforced the exact Forgejo ceremony source and version across governance records and workflow pins. (#36).
diff --git a/test/governance.test.js b/test/governance.test.js
index 62eca37..85607c8 100644
--- a/test/governance.test.js
+++ b/test/governance.test.js
@@ -11,6 +11,9 @@ const REPOSITORY_CONFIG = path.join(__dirname, '..', '.github', 'labels.conf');
 const REPOSITORY_LABELER = path.join(__dirname, '..', '.github', 'labeler.yml');
 const REPOSITORY_MIRROR = path.join(__dirname, '..', '.ceremony');
 const ROOT_AGENTS = path.join(__dirname, '..', 'AGENTS.md');
+const CEREMONY_REPOSITORY = 'https://forgejo.heavyduty.builders/heavy-duty/ceremony';
+const CEREMONY_VERSION = '0.6.3';
+const CEREMONY_WORKFLOWS = ['labels.yml', 'labels-sweep.yml'];
 const cleanups = [];
 process.on('exit', () => {
   for (const dir of cleanups) fs.rmSync(dir, { recursive: true, force: true });
@@ -131,14 +134,38 @@ test('repository scope mapping covers every configured scope with the ruled path
   }
 });
 
-test('repository carries the complete 0.6.1 doctrine mirror and root router', () => {
+test('repository carries the complete Forgejo 0.6.3 doctrine mirror and root router', () => {
   const vendored = ['AGENTS.md', 'TRIAGE.md', 'BUILDER.md', 'REVIEWER.md', 'LABELS.md', 'RELEASES.md'];
   for (const filename of vendored) {
     assert.ok(fs.statSync(path.join(REPOSITORY_MIRROR, filename)).isFile(), `${filename} is missing`);
   }
   const mirrorReadme = fs.readFileSync(path.join(REPOSITORY_MIRROR, 'README.md'), 'utf8');
+  const sourceVersionRecord = `[heavy-duty/ceremony](${CEREMONY_REPOSITORY}) at ${CEREMONY_VERSION}`;
+  assert.equal(
+    mirrorReadme.split(sourceVersionRecord).length - 1,
+    2,
+    'mirror README does not identify the exact Forgejo ceremony source and version in both records',
+  );
   assert.match(mirrorReadme, /labels doctrine is vendored manually/);
   assert.doesNotMatch(mirrorReadme, /The pin lives in `.github\/workflows\/release\.yml`/);
   assert.doesNotMatch(mirrorReadme, /Machine-managed by|CI re-diffs them/);
-  assert.match(fs.readFileSync(ROOT_AGENTS, 'utf8'), /read\s+`.ceremony\/AGENTS\.md` first/i);
+  const rootAgents = fs.readFileSync(ROOT_AGENTS, 'utf8');
+  assert.ok(
+    rootAgents.includes(`[heavy-duty/ceremony](${CEREMONY_REPOSITORY})`),
+    'root router does not identify the Forgejo ceremony repository',
+  );
+  assert.match(rootAgents, /read\s+`.ceremony\/AGENTS\.md` first/i);
+});
+
+test('repository workflow pins use the exact Forgejo ceremony version', () => {
+  for (const workflow of CEREMONY_WORKFLOWS) {
+    const contents = fs.readFileSync(path.join(__dirname, '..', '.forgejo', 'workflows', workflow), 'utf8');
+    const prefix = `uses: heavy-duty/ceremony/.github/workflows/${workflow}@`;
+    const pins = contents.split(/\r?\n/).map((line) => line.trim()).filter((line) => line.startsWith(prefix));
+    assert.deepEqual(
+      pins,
+      [`${prefix}${CEREMONY_VERSION}`],
+      `${workflow} does not pin ceremony ${CEREMONY_VERSION}`,
+    );
+  }
 });