$ git clone -n https://gitee.com/src-opencloudos-rpms/tftp.git /var/lib/mock/dist-oc8-build-74606-50853/root/chroot_tmpdir/scmroot/tftp
Cloning into '/var/lib/mock/dist-oc8-build-74606-50853/root/chroot_tmpdir/scmroot/tftp'...
$ git fetch origin b24f40f0c0d56d8764a32d0da073634aaa4b9923:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/tftp
 * [new ref]         b24f40f0c0d56d8764a32d0da073634aaa4b9923 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b24f40f import tftp-5.2-27.tl3