diff --git a/.github/workflows/zz_generated.create_release_pr.yaml b/.github/workflows/zz_generated.create_release_pr.yaml
index ce94a1d..757bdaf 100644
--- a/.github/workflows/zz_generated.create_release_pr.yaml
+++ b/.github/workflows/zz_generated.create_release_pr.yaml
@@ -227,4 +227,6 @@ jobs:
           base: "${{ needs.gather_facts.outputs.base }}"
           version: "${{ needs.gather_facts.outputs.version }}"
         run: |
-          hub pull-request -f -m "Release v${{ env.version }}" -a ${{ github.actor }} -b ${{ env.base }} -h ${{ needs.gather_facts.outputs.branch }}
+          head="${{ steps.gather_facts.outputs.branch }}"
+          branch="${head#refs/heads/}" # Strip "refs/heads/" prefix.
+          gh pr create -f -m "Release v${{ env.version }}" -a ${{ github.actor }} -b ${{ env.base }} -H "${branch}"