fix: github actions was checking out the wrong ref

Author: lquixada

.github/workflows/pr.yml

@@ -28,6 +28,8 @@ jobs:
     name: Install
     runs-on: ubuntu-latest
     steps:
+    - name: Blah
+      run: echo blah
     - uses: actions/checkout@v3
       with:
         ref: ${{ github.event.pull_request.head.sha }}