Fetch history when cloning, otherwise git commands such as `rev-parse…

…` could fail. (smithy-lang#2314)

.github/workflows/release.yml

@@ -87,6 +87,7 @@ jobs:
       with:
         ref: ${{ inputs.commit_sha }}
         token: ${{ secrets.RELEASE_AUTOMATION_BOT_PAT }}
+        fetch-depth: 0
     - name: Get or create release branch
       id: branch-push
       shell: bash