Workflow fix

Author: DirtyNative

.github/workflows/publish.yml

@@ -17,6 +17,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
 
       - name: Setup Dart
         uses: dart-lang/setup-dart@v1
@@ -32,12 +34,26 @@ jobs:
       - name: Bootstrap
         run: melos bootstrap
 
-      - name: Set release train version
+      - name: Derive version from tag
         run: |
           set -euo pipefail
           VERSION="${GITHUB_REF_NAME#v}"
           echo "Releasing version: $VERSION"
+          echo "VERSION=$VERSION" >> "$GITHUB_ENV"
+
+      - name: Checkout release branch (avoid detached HEAD)
+        run: |
+          set -euo pipefail
+
+          BRANCH="release/$VERSION"
+          echo "Checking out $BRANCH"
 
+          git fetch origin "$BRANCH:refs/remotes/origin/$BRANCH" --tags --force
+          git checkout -B "$BRANCH" "origin/$BRANCH"
+
+      - name: Set release train version
+        run: |
+          set -euo pipefail
           # Force every public workspace package to the exact same version.
           # We intentionally avoid committing/tagging here; the tag already exists.
           melos version --yes \