Specify main branch

.github/workflows/release.yml

@@ -13,6 +13,7 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v2
         with:
+          ref: main
           fetch-depth: 0 # Fetch all history for all branches and tags
           # Requires "Read and Write access to code" permission
           token: ${{ secrets.RELEASE_ACTION_ACCESS_TOKEN }}