Attempt to resolve the proper branch name

.github/workflows/split_monorepo.yml

@@ -62,6 +62,11 @@ jobs:
           branch: ${{ github.ref_name }}
 
       # with tag
+      -
+        if: "startsWith(github.ref, 'refs/tags/')"
+        id: extract-branch-name
+        run: echo "branch=$(git branch -a --contains ${{ github.sha }} | grep -v 'HEAD' | sed -n 2p | awk '{ printf $1 }' | sed 's/remotes\/origin\///g')" >> $GITHUB_OUTPUT
+
       -
         if: "startsWith(github.ref, 'refs/tags/')"
         # Uses an action in the root directory
@@ -78,4 +83,4 @@ jobs:
           repository_host: "github.com"
           user_name: "mantle-ci"
           user_email: "mantle@alley.com"
-          branch: ${{ github.ref_name }}
+          branch: ${{ steps.extract-branch-name.outputs.branch }}