scott.linder added a comment.

Thank you for the explanation; I'm also still lost as to why `.git/logs/HEAD` 
is referenced at all then. I would propose removing 
`find_first_existing_vc_file` entirely, as it seems to be completely redundant 
if there is another mechanism for ensuring the VCS header is up-to-date without 
triggering gratuitous rebuilds, but I will defer to any of the other reviewers 
on the `blame` for the scripts.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D79400/new/

https://reviews.llvm.org/D79400



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