$ git clone -n https://gitee.com/src-opencloudos-rpms/lv2.git /var/lib/mock/dist-oc9-epol-build-54976-14778/root/chroot_tmpdir/scmroot/lv2
Cloning into '/var/lib/mock/dist-oc9-epol-build-54976-14778/root/chroot_tmpdir/scmroot/lv2'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/lv2
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f13b2d4 import lv2-1.18.8-2.tl4