From github.com:llvm/llvm-project
 * branch                      main       -> FETCH_HEAD
   906cbbbd3cbb..a4e87da963a6  main       -> origin/main
Switched to branch 'main'
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  (use "git pull" to update your local branch)
HEAD is now at a4e87da963a6 [libc] Make headers compatible with C++ < 11 (#123260)