$ git clone -n https://src.fedoraproject.org/rpms/layer-shell-qt.git /var/lib/mock/f41-build-858759-168473/root/chroot_tmpdir/scmroot/layer-shell-qt
Cloning into '/var/lib/mock/f41-build-858759-168473/root/chroot_tmpdir/scmroot/layer-shell-qt'...
$ git fetch origin 74468d561b8fc1ecd8dc351c8beab8b7737e43ac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/layer-shell-qt
 * [new ref]         74468d561b8fc1ecd8dc351c8beab8b7737e43ac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 74468d5 6.2.2