$ git clone -n https://gitee.com/src-opencloudos-rpms/openstack-dashboard.git /var/lib/mock/dist-oc9-epol-build-56092-14802/root/chroot_tmpdir/scmroot/openstack-dashboard
Cloning into '/var/lib/mock/dist-oc9-epol-build-56092-14802/root/chroot_tmpdir/scmroot/openstack-dashboard'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/openstack-dashboard
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8ce4f1e import openstack-dashboard-19.2.0-2.tl4