Handle hidden refs (#1774)

Co-authored-by: Chris Gavin <chris@chrisgavin.me>

__test__/ref-helper.test.ts

@@ -67,6 +67,16 @@ describe('ref-helper tests', () => {
     expect(checkoutInfo.startPoint).toBeFalsy()
   })
 
+  it('getCheckoutInfo refs/', async () => {
+    const checkoutInfo = await refHelper.getCheckoutInfo(
+      git,
+      'refs/gh/queue/main/pr-123',
+      commit
+    )
+    expect(checkoutInfo.ref).toBe(commit)
+    expect(checkoutInfo.startPoint).toBeFalsy()
+  })
+
   it('getCheckoutInfo unqualified branch only', async () => {
     git.branchExists = jest.fn(async (remote: boolean, pattern: string) => {
       return true

dist/index.js

@@ -2000,9 +2000,13 @@ function getCheckoutInfo(git, ref, commit) {
             result.ref = `refs/remotes/pull/${branch}`;
         }
         // refs/tags/
-        else if (upperRef.startsWith('REFS/')) {
+        else if (upperRef.startsWith('REFS/TAGS/')) {
             result.ref = ref;
         }
+        // refs/
+        else if (upperRef.startsWith('REFS/') && commit) {
+            result.ref = commit;
+        }
         // Unqualified ref, check for a matching branch or tag
         else {
             if (yield git.branchExists(true, `origin/${ref}`)) {

src/ref-helper.ts

@@ -42,9 +42,13 @@ export async function getCheckoutInfo(
     result.ref = `refs/remotes/pull/${branch}`
   }
   // refs/tags/
-  else if (upperRef.startsWith('REFS/')) {
+  else if (upperRef.startsWith('REFS/TAGS/')) {
     result.ref = ref
   }
+  // refs/
+  else if (upperRef.startsWith('REFS/') && commit) {
+    result.ref = commit
+  }
   // Unqualified ref, check for a matching branch or tag
   else {
     if (await git.branchExists(true, `origin/${ref}`)) {