From github.com:llvm/llvm-project
 * branch                      main       -> FETCH_HEAD
   789845e319bb..ac6afd8e4614  main       -> origin/main
Switched to branch 'main'
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HEAD is now at ac6afd8e4614 [LegalizeDAG] Return after replacing ISD::POISON with ISD::UNDEF. (#173173)