From github.com:llvm/llvm-project
 * branch                      main       -> FETCH_HEAD
   267eb81d5b92..8b020d543407  main       -> origin/main
Switched to branch 'main'
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  (use "git pull" to update your local branch)
HEAD is now at 8b020d543407 [Preprocessor] Do not expand macros if the input is already preprocessed (#137665)