modify after-validate-submission.yaml to add fetch-depth 2 when Check…

…out for getting one ahead commit too

.github/workflows/after-validate-submission.yaml

@@ -13,6 +13,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v2
+        with:
+          fetch-depth: 2
 
       - name: Checkout and push to another repository
         uses: actions/checkout@v2