From https://github.com/llvm/llvm-project
 * branch                      main       -> FETCH_HEAD
   5964f4bcf012..3761ad01e125  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 3761ad01e125 [libc++] Remove _LIBCPP_ATOMIC_ONLY_USE_BUILTINS (#82000)