$ git clone -n https://gitee.com/src-opencloudos-rpms/basesystem.git /var/lib/mock/dist-oc9-build-126652-76249/root/chroot_tmpdir/scmroot/basesystem
Cloning into '/var/lib/mock/dist-oc9-build-126652-76249/root/chroot_tmpdir/scmroot/basesystem'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/basesystem
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at da542fc import basesystem-1-8.tl4