$ git clone -n https://gitee.com/src-opencloudos-rpms/chan.git /var/lib/mock/dist-oc9-build-62910-16463/root/chroot_tmpdir/scmroot/chan
Cloning into '/var/lib/mock/dist-oc9-build-62910-16463/root/chroot_tmpdir/scmroot/chan'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/chan
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 17ac76c import chan-0.0.4-4.tl4