fetching proper base_ref.

Author: bexxmodd

.github/workflows/crd-validation.yml

@@ -30,11 +30,11 @@ jobs:
 
       - name: Run CRD Validation Check
         run: |
-          git fetch origin ${{ github.base_ref }}
-          BASE_REF="origin/${{ github.base_ref }}"
+          git fetch origin ${{ github.base_ref }}:upstream_base
+          BASE_SHA=$(git rev-parse upstream_base)
+          echo "Validating against Base SHA: $BASE_SHA (derived from ${{ github.base_ref }})"
 
           FAILED=0
-
           for crd in config/crd/bases/*.yaml; do
             if ! crdify "git://${BASE_REF}?path=$crd" "git://HEAD?path=$crd"; then
               echo "❌ Incompatible change detected in $crd"