$ git clone -n https://gitee.com/src-opencloudos-rpms/librdkafka.git /var/lib/mock/dist-oc9-build-121925-71843/root/chroot_tmpdir/scmroot/librdkafka
Cloning into '/var/lib/mock/dist-oc9-build-121925-71843/root/chroot_tmpdir/scmroot/librdkafka'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/librdkafka
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8bf0a13 import librdkafka-2.3.0-3.tl4