$ git clone -n https://gitee.com/wency_cn/tuna_1770754936.git /var/lib/mock/dist-an23-build-513273-75099/root/chroot_tmpdir/scmroot/tuna_1770754936
Cloning into '/var/lib/mock/dist-an23-build-513273-75099/root/chroot_tmpdir/scmroot/tuna_1770754936'...
$ git fetch origin ab32c15d10dd43b7c9d424fe321cf903ee5d42c2:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/tuna_1770754936
 * [new ref]         ab32c15d10dd43b7c9d424fe321cf903ee5d42c2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ab32c15 Update code from upstream