$ git clone -n https://gitee.com/src-opencloudos-rpms/openstack-keystone.git /var/lib/mock/dist-oc9-epol-build-55741-14784/root/chroot_tmpdir/scmroot/openstack-keystone
Cloning into '/var/lib/mock/dist-oc9-epol-build-55741-14784/root/chroot_tmpdir/scmroot/openstack-keystone'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/openstack-keystone
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6087e12 import openstack-keystone-19.0.0-3.tl4