From github.com:llvm/llvm-project
 * branch                      main       -> FETCH_HEAD
   df89bcad92cd..0fc8ce3bb59b  main       -> origin/main
Switched to branch 'main'
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  (use "git pull" to update your local branch)
HEAD is now at 0fc8ce3bb59b [libc++][optional][NFC] Use variable templates instead of class templates (#212443)