$ git clone -n https://src.fedoraproject.org/rpms/x2goclient.git /var/lib/mock/f45-build-38580-725/root/chroot_tmpdir/scmroot/x2goclient
Cloning into '/var/lib/mock/f45-build-38580-725/root/chroot_tmpdir/scmroot/x2goclient'...
$ git fetch origin 9bb10d9911cf844c40e50000f0d57b7b2b51393b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/x2goclient
 * [new ref]         9bb10d9911cf844c40e50000f0d57b7b2b51393b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9bb10d9 Drop x86_32