From https://github.com/llvm/llvm-project
 * branch                      main       -> FETCH_HEAD
   b7770befee37..40d5c2bcd41a  main       -> origin/main
Your branch is behind 'origin/main' by 1 commit, and can be fast-forwarded.
  (use "git pull" to update your local branch)
Switched to branch 'main'
HEAD is now at 40d5c2bcd41a [clang][AArch64] Add a -mbranch-protection option to enable GCS (#75486)