$ git clone -n https://src.fedoraproject.org/rpms/python-x2go.git /var/lib/mock/f41-build-side-2-python-2733601-30820/root/chroot_tmpdir/scmroot/python-x2go
Cloning into '/var/lib/mock/f41-build-side-2-python-2733601-30820/root/chroot_tmpdir/scmroot/python-x2go'...
$ git fetch origin dd7d6306297779a29e27c6f7a3e50a78b737b54b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-x2go
 * [new ref]         dd7d6306297779a29e27c6f7a3e50a78b737b54b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dd7d630 Add patch to rename SafeConfigParser to ConfigParser (bz#2308657)