fix(dir-data): 🐛 try fix directory-migrate on PR from fork

ref https://github.com/collinbarrett/FilterLists/pull/4366

.github/workflows/directory-migrate.yml

@@ -29,7 +29,8 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
         with:
-          ref: ${{ github.head_ref }}
+          repository: ${{ github.event.pull_request.head.repo.full_name }}
+          ref: ${{ github.event.pull_request.head.ref }}
           fetch-depth: 50 # guess max depth for data migration branch to avoid fetching all while still allowing sync w/upstream
 
       - name: Lint