From github.com:llvm/llvm-project
 * branch                      main       -> FETCH_HEAD
   a0c00ccd5ff1..c4ba734993ac  main       -> origin/main
Switched to branch 'main'
Your branch is behind 'origin/main' by 1 commit, and can be fast-forwarded.
  (use "git pull" to update your local branch)
HEAD is now at c4ba734993ac [mlir] Compare std::optional<T> to values directly (NFC) (#144241)