wip: create PR that demonstrates bug

.github/workflows/ci.yaml

@@ -14,7 +14,7 @@ jobs:
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
         with:
-          fetch-depth: 2
+          fetch-depth: 20
       - name: Use Node.js
         uses: actions/setup-node@60edb5dd545a775178f52524783378180af0d1f8 # v4.0.2
         with:
@@ -31,7 +31,7 @@ jobs:
       - run: pnpm build
       - run: pnpm lint
       - run: pnpm format:check
-      - run: pnpm test:integration
+      - run: pnpm test:integration ghbug
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           HEAD_OID: ${{ github.base_ref }}

src/test/integration/ghbug.test.ts

@@ -0,0 +1,77 @@
+import { getOctokit } from "@actions/github";
+import { promises as fs } from "fs";
+
+import { ENV, REPO, ROOT_TEST_BRANCH_PREFIX } from "./env.js";
+import { deleteBranches } from "./util.js";
+import {
+  createRefMutation,
+  getRepositoryMetadata,
+} from "../../github/graphql/queries.js";
+import git from "isomorphic-git";
+
+const octokit = getOctokit(ENV.GITHUB_TOKEN);
+
+const TEST_BRANCH_PREFIX = `${ROOT_TEST_BRANCH_PREFIX}-ghbug`;
+
+describe("demonstrate bug with", () => {
+  const branches: string[] = [];
+
+  // Set timeout to 1 minute
+  jest.setTimeout(60 * 1000);
+
+  let repositoryId: string;
+  let shas: string[] = [];
+
+  beforeAll(async () => {
+    const response = await getRepositoryMetadata(octokit, {
+      owner: REPO.owner,
+      name: REPO.repository,
+      baseRef: "HEAD",
+      targetRef: "HEAD",
+    });
+    if (!response?.id) {
+      throw new Error("Repository not found");
+    }
+    repositoryId = response.id;
+    // Get most recent 10 commits
+    const log = await git.log({ fs, dir: process.cwd(), depth: 10 });
+    shas = log.map((commit) => commit.oid);
+    console.log("SHAS", shas);
+  });
+
+  for (let i = 0; i < 10; i++) {
+    describe(`Create branches from HEAD~${i}`, () => {
+      it(`GraphQL: createRef mutation`, async () => {
+        const branch = `${TEST_BRANCH_PREFIX}-graphql-${i}`;
+        branches.push(branch);
+        // Create test directory
+
+        await createRefMutation(octokit, {
+          input: {
+            repositoryId,
+            name: `refs/heads/${branch}`,
+            oid: shas[i],
+          },
+        });
+      });
+
+      it(`REST: createRef mutation`, async () => {
+        const branch = `${TEST_BRANCH_PREFIX}-rest-${i}`;
+        branches.push(branch);
+        // Create test directory
+        await octokit.rest.git.createRef({
+          owner: REPO.owner,
+          repo: REPO.repository,
+          ref: `refs/heads/${branch}`,
+          sha: shas[i] ?? "",
+        });
+      });
+    });
+  }
+
+  afterAll(async () => {
+    console.info("Cleaning up test branches");
+
+    await deleteBranches(octokit, branches);
+  });
+});