From https://github.com/llvm/llvm-project
 * branch                      main       -> FETCH_HEAD
   ac38ab594f1b..ddc0c5c7a3bb  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 ddc0c5c7a3bb [CMake] Do all availability checks with -D_GNU_SOURCE (#116640)