added default checkout to rename-tag action to access .git instance

Author: Scott Alexander

.github/workflows/git-rename-tag.yml

@@ -22,6 +22,12 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          ref: main
+
       - name: Get and create new tag
         id: init
         run: |