LINBEE-21919 - gracefully exit checkout workflow on gitStream when branch deleted

action.yml

@@ -86,10 +86,10 @@ runs:
         git config checkout.defaultRemote origin
         git fetch --shallow-since="6 months ago" origin $'${{ steps.safe-strings.outputs.base_ref }}'
         git remote add upstream $'${{ steps.safe-strings.outputs.url }}'
-        git fetch --shallow-since="6 months ago" upstream $'${{ steps.safe-strings.outputs.head_ref }}'
-        git checkout -b $'upstream/${{ steps.safe-strings.outputs.head_ref}}' $'upstream/${{ steps.safe-strings.outputs.head_ref}}'
-        git checkout $'${{ steps.safe-strings.outputs.base_ref }}'
-        git checkout $'${{ steps.safe-strings.outputs.head_ref }}'
+        git fetch --shallow-since="6 months ago" upstream $'${{ steps.safe-strings.outputs.head_ref }}' || echo "::warning::Failed to fetch head branch. The branch may have been deleted."
+        git checkout -b $'upstream/${{ steps.safe-strings.outputs.head_ref}}' $'upstream/${{ steps.safe-strings.outputs.head_ref}}' || true
+        git checkout $'${{ steps.safe-strings.outputs.base_ref }}' || true
+        git checkout $'${{ steps.safe-strings.outputs.head_ref }}' || true
 
     - name: Create cm folder
       shell: bash

package.json

@@ -39,7 +39,7 @@
   "license": "Apache-2.0",
   "dependencies": {
     "@actions/core": "^2.0.1",
-    "@linearb/gitstream-core": "2.1.244",
+    "@linearb/gitstream-core": "2.1.244-10",
     "@wasm-fmt/ruff_fmt": "^0.14.10"
   },
   "devDependencies": {