fixup! ci(sync_branch): update existing PR

Author: acolombier

.github/workflows/sync_branches.yml

@@ -11,8 +11,6 @@ permissions: {}
 env:
   SYNC_COMMITTER_EMAIL: [email protected]
   SYNC_COMMITTER_NAME: Mixxx Bot
-  SYNC_COMMITTER: ${SYNC_COMMITTER_NAME} <${SYNC_COMMITTER_EMAIL}>
-
 jobs:
   sync-branches:
     strategy:
@@ -57,12 +55,12 @@ jobs:
         run: |
           if git fetch origin "${SYNC_BRANCH}"; then
             echo "Branch ${SYNC_BRANCH} already exists, checking if the branch was modified..."
-            COMMITTER="$(git show --pretty=format:"%cn <%ce>" --no-patch "origin/${SYNC_BRANCH}")"
-            if [ "${COMMITTER}" = "${SYNC_COMMITTER}" ]; then
+            echo "branch_exists=true" >> $GITHUB_OUTPUT
+            COMMITTER_EMAIL="$(git show --pretty=format:"%ce" --no-patch "origin/${SYNC_BRANCH}")"
+            if [ "${COMMITTER_EMAIL}" = "${SYNC_COMMITTER_EMAIL}" ]; then
               echo "Branch ${SYNC_BRANCH} was not modified."
             else
               echo "Branch ${SYNC_BRANCH} was modified, either delete it or update it yourself."
-              echo "branch_exists=true" >> $GITHUB_OUTPUT
             fi
           else
             echo "Branch ${SYNC_BRANCH} does not exist yet."