$ git clone -n https://src.fedoraproject.org/rpms/smokegen.git /var/lib/mock/f41-build-side-1-2771301-32222/root/chroot_tmpdir/scmroot/smokegen
Cloning into '/var/lib/mock/f41-build-side-1-2771301-32222/root/chroot_tmpdir/scmroot/smokegen'...
$ git fetch origin 9dd888472d1fd15839e116ff046a4789a66f3bab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/smokegen
 * [new ref]         9dd888472d1fd15839e116ff046a4789a66f3bab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9dd8884 convert license to SPDX