$ git clone -n https://src.fedoraproject.org/rpms/mlir.git /var/lib/mock/f39-build-2325142-58782/root/chroot_tmpdir/scmroot/mlir
Cloning into '/var/lib/mock/f39-build-2325142-58782/root/chroot_tmpdir/scmroot/mlir'...
$ git fetch origin d863d6bd2066320551434be2e972167161251c70:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mlir
 * [new ref]         d863d6bd2066320551434be2e972167161251c70 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d863d6b Update to LLVM 17.0.6