$ git clone -n https://gitee.com/src-opencloudos-rpms/zimg.git /var/lib/mock/dist-oc9-epol-build-54415-14768/root/chroot_tmpdir/scmroot/zimg
Cloning into '/var/lib/mock/dist-oc9-epol-build-54415-14768/root/chroot_tmpdir/scmroot/zimg'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/zimg
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at da65e87 import zimg-3.0.4-2.tl4