$ git clone -n https://src.fedoraproject.org/rpms/gtk-gnutella.git /var/lib/mock/f41-build-side-1-3132616-39663/root/chroot_tmpdir/scmroot/gtk-gnutella
Cloning into '/var/lib/mock/f41-build-side-1-3132616-39663/root/chroot_tmpdir/scmroot/gtk-gnutella'...
$ git fetch origin 0e095a4e163ea7dc384e3eb3bccf1a1170716be5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtk-gnutella
 * [new ref]         0e095a4e163ea7dc384e3eb3bccf1a1170716be5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0e095a4 Update to 1.2.3