$ git clone -n https://src.fedoraproject.org/rpms/libopenmpt.git /var/lib/mock/f41-build-826360-154900/root/chroot_tmpdir/scmroot/libopenmpt
Cloning into '/var/lib/mock/f41-build-826360-154900/root/chroot_tmpdir/scmroot/libopenmpt'...
$ git fetch origin b1d85c3dbffb64e68adb89e2e25eea7f1ea23d6f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libopenmpt
 * [new ref]         b1d85c3dbffb64e68adb89e2e25eea7f1ea23d6f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b1d85c3 update to 0.7.9