$ git clone -n https://gitee.com/src-opencloudos-rpms/librdkafka.git /var/lib/mock/dist-oc8-build-74645-50943/root/chroot_tmpdir/scmroot/librdkafka
Cloning into '/var/lib/mock/dist-oc8-build-74645-50943/root/chroot_tmpdir/scmroot/librdkafka'...
$ git fetch origin dd975d5053c7ca0682dea783da80f764d3998d3d:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/librdkafka
 * [new ref]         dd975d5053c7ca0682dea783da80f764d3998d3d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dd975d5 import librdkafka-1.6.1-1.tl3