$ git clone -n https://gitee.com/src-opencloudos-rpms/vsftpd.git /var/lib/mock/dist-oc8-build-233352-81853/root/chroot_tmpdir/scmroot/vsftpd
Cloning into '/var/lib/mock/dist-oc8-build-233352-81853/root/chroot_tmpdir/scmroot/vsftpd'...
$ git fetch origin b27e1c78979e49b24a718c91c458dfc498904a0a:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/vsftpd
 * [new ref]         b27e1c78979e49b24a718c91c458dfc498904a0a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b27e1c7 import vsftpd-3.0.3-36.tl3.3