From https://github.com/llvm/llvm-project
 * branch                      main       -> FETCH_HEAD
   718818a5cb4c..6f91f588d98a  main       -> origin/main
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warning: The last gc run reported the following. Please correct the root cause
and remove .git/gc.log
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warning: There are too many unreachable loose objects; run 'git prune' to remove them.

Switched to branch 'main'
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HEAD is now at 6f91f588d98a build_llvm_release.bat: Put the 32-bit sanitizers back (#166437)