$ git clone -n https://gitee.com/src-opencloudos-rpms/vsftpd.git /var/lib/mock/dist-oc9-build-45453-14591/root/chroot_tmpdir/scmroot/vsftpd
Cloning into '/var/lib/mock/dist-oc9-build-45453-14591/root/chroot_tmpdir/scmroot/vsftpd'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/vsftpd
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ab64eee import vsftpd-3.0.5-3.tl4