$ git clone -n https://src.fedoraproject.org/rpms/gr-funcube.git /var/lib/mock/f41-build-850227-165169/root/chroot_tmpdir/scmroot/gr-funcube
Cloning into '/var/lib/mock/f41-build-850227-165169/root/chroot_tmpdir/scmroot/gr-funcube'...
$ git fetch origin ff907fc91111645f5953bab89db625ec8fc39b5a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gr-funcube
 * [new ref]         ff907fc91111645f5953bab89db625ec8fc39b5a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ff907fc New snapshot