$ git clone -n https://gitee.com/src-opencloudos-rpms/openstack-nova.git /var/lib/mock/dist-oc9-epol-build-55372-14780/root/chroot_tmpdir/scmroot/openstack-nova
Cloning into '/var/lib/mock/dist-oc9-epol-build-55372-14780/root/chroot_tmpdir/scmroot/openstack-nova'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/openstack-nova
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d22ca6a import openstack-nova-23.1.0-2.tl4