$ git clone -n https://src.fedoraproject.org/rpms/mlir.git /var/lib/mock/f41-build-side-2-python-2708453-30473/root/chroot_tmpdir/scmroot/mlir
Cloning into '/var/lib/mock/f41-build-side-2-python-2708453-30473/root/chroot_tmpdir/scmroot/mlir'...
$ git fetch origin bfcabf0eac8c376ebf58ee1c539c33f25611516c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mlir
 * [new ref]         bfcabf0eac8c376ebf58ee1c539c33f25611516c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bfcabf0 Update to 19.1.0