$ git clone -n https://gitee.com/opencloudos-stream/openstack-kolla.git /var/lib/mock/dist-oc9-epol-build-64816-16665/root/chroot_tmpdir/scmroot/openstack-kolla
Cloning into '/var/lib/mock/dist-oc9-epol-build-64816-16665/root/chroot_tmpdir/scmroot/openstack-kolla'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/openstack-kolla
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d6dadd0 !1 Upgrade to 15.2.0 Merge pull request !1 from kianli/master