From https://github.com/llvm/llvm-project
 * branch                      main       -> FETCH_HEAD
   8779cf68e80d..433f8e741e7d  main       -> origin/main
Your branch is behind 'origin/main' by 4 commits, and can be fast-forwarded.
  (use "git pull" to update your local branch)
Switched to branch 'main'
HEAD is now at 433f8e741e7d MachineSSAUpdater: use all vreg attributes instead of reg class only (#78431)