set github.head_ref for destination

.github/workflows/release.yml

@@ -118,7 +118,7 @@ jobs:
       uses: repo-sync/pull-request@v2
       with:
         source_branch: support/prepare-v${{ steps.package-json.outputs.packageVersion }}
-        destination_branch: master
+        destination_branch: ${{ github.head_ref }}
         pr_title: Prepare v${{ steps.package-json.outputs.packageVersion }}
         pr_label: flag/exclude-from-changelog,type/prepare-next-version
         pr_body: "[skip ci] An automated PR generated by create-pr-for-next-rc"