$ git clone -n https://src.fedoraproject.org/rpms/gerbera.git /var/lib/mock/f40-build-2208097-52110/root/chroot_tmpdir/scmroot/gerbera
Cloning into '/var/lib/mock/f40-build-2208097-52110/root/chroot_tmpdir/scmroot/gerbera'...
$ git fetch origin 38339090bfdedc620d3ee1276c5b889f41131fa7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gerbera
 * [new ref]         38339090bfdedc620d3ee1276c5b889f41131fa7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3833909 2.0.0