diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 5da9095..50f13c4 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -19,6 +19,7 @@ jobs:
       # first load the base branch
       - uses: actions/checkout@v4
         with:
+          repository: ${{ github.event.pull_request.head.repo.full_name }}
           ref: ${{ github.event.pull_request.head.sha }}
           fetch-depth: 0
       # and then the PR commit