add git config to tag job (#5854)

.github/scripts/create-release-tarballs.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-set -e
+set -ex
 
 directory=$1
 version=$2

.github/workflows/release.yml

@@ -94,6 +94,8 @@ jobs:
 
       - name: Create new release Tag
         run: |
+          git config --global user.email "[email protected]"
+          git config --global user.name "NGINX Kubernetes Team"
           branch="${{ inputs.release_branch }}"
           tag="v${{ inputs.nic_version }}"
           if ! git rev-parse --verify refs/tags/${tag}; then
@@ -299,6 +301,8 @@ jobs:
     steps:
       - name: Checkout Repository
         uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
+        with:
+          ref: ${{ inputs.release_branch }}
 
       - name: Fetch Binary Artifacts from Cache
         uses: actions/cache@0c45773b623bea8c8e75f6c82b208c3cf94ea4f9 # v4.0.2