From https://github.com/llvm/llvm-project
 * branch                      main       -> FETCH_HEAD
   bfe93aedcc7d..4f4e2abb1a5f  main       -> origin/main
Switched to branch 'main'
Your branch is behind 'origin/main' by 5 commits, and can be fast-forwarded.
  (use "git pull" to update your local branch)
HEAD is now at 4f4e2abb1a5f [mlir] Migrate away from PointerUnion::{is,get} (NFC) (#122591)