From github.com:llvm/llvm-project
 * branch                      main       -> FETCH_HEAD
   5b9006550d77..ccf21094713e  main       -> origin/main
Switched to branch 'main'
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  (use "git pull" to update your local branch)
HEAD is now at ccf21094713e [Metadata] Change placeholder from `undef` to `poison` (#131469)