$ git clone -n https://gitee.com/src-opencloudos-rpms/iperf3.git /var/lib/mock/dist-oc9-build-250926-84048/root/chroot_tmpdir/scmroot/iperf3
Cloning into '/var/lib/mock/dist-oc9-build-250926-84048/root/chroot_tmpdir/scmroot/iperf3'...
$ git fetch origin 0a6ebf3323cb64091c251950e46ffeca8edc9011:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/iperf3
 * [new ref]         0a6ebf3323cb64091c251950e46ffeca8edc9011 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0a6ebf3 import iperf3-3.21-2.tl4