$ git clone -n https://gitee.com/opencloudos-stream/subunit.git /var/lib/mock/dist-ocs23-build-44073-2059/root/chroot_tmpdir/scmroot/subunit
Cloning into '/var/lib/mock/dist-ocs23-build-44073-2059/root/chroot_tmpdir/scmroot/subunit'...
$ git fetch origin HEAD:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/subunit
 * [new ref]         HEAD       -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eeec66a update