Add fetch-depth option to checkout step

Author: mxritzdev

.github/workflows/pr-docker.yaml

@@ -16,6 +16,9 @@ jobs:
     steps:
       - name: Checkout Code
         uses: actions/checkout@v4
+        with:
+          ref: ${{ github.head_ref }}
+          fetch-depth: 0
 
       - name: Setup Qemu
         uses: docker/setup-qemu-action@v3