[llvm-dev] Question about state of the repository

[Paul C. Anagnostopoulos via llvm-dev]

I was about to push a revision and did my customary 

> git log origin/main...HEAD --oneline

Here is what it displayed:

48dfad4d2e7b (HEAD -> main, bang) [TableGen] Fix bug in !interleave operator
496fb70b141c (origin/main) [MachO] Fix enum-int mismatch warning
e73f885c988d (origin/master, origin/HEAD) [PowerPC] Remove redundant
    COPY_TO_REGCLASS introduced by 8a58f21f5b6c
c3b9d85bd4b7 [clang-tidy][NFC] Remove unnecessary headers

What is going on with the third commit?