$ git clone -n https://src.fedoraproject.org/rpms/transmission.git /var/lib/mock/f40-build-804425-144517/root/chroot_tmpdir/scmroot/transmission
Cloning into '/var/lib/mock/f40-build-804425-144517/root/chroot_tmpdir/scmroot/transmission'...
$ git fetch origin 46053ec7fe67ad2d1f490770060d12a48747131a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/transmission
 * [new ref]         46053ec7fe67ad2d1f490770060d12a48747131a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 46053ec Fix translation packaging