From github.com:llvm/llvm-project
 * branch                      main       -> FETCH_HEAD
   d63ca96ec35e..4979904f7ed8  main       -> origin/main
Switched to branch 'main'
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  (use "git pull" to update your local branch)
HEAD is now at 4979904f7ed8 Revert "Reapply [Clang] Implement P2843R3 - Preprocessing is never undefined" (#198641)