$ git clone -n https://gitee.com/src-opencloudos-rpms/units.git /var/lib/mock/dist-oc9-build-45365-14591/root/chroot_tmpdir/scmroot/units
Cloning into '/var/lib/mock/dist-oc9-build-45365-14591/root/chroot_tmpdir/scmroot/units'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/units
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 342632c import units-2.22-3.tl4