$ git clone -n https://gitee.com/wency_cn/tuna_1768585599.git /var/lib/mock/dist-an23-build-507736-74937/root/chroot_tmpdir/scmroot/tuna_1768585599
Cloning into '/var/lib/mock/dist-an23-build-507736-74937/root/chroot_tmpdir/scmroot/tuna_1768585599'...
$ git fetch origin 7a02114138329ce802ae1e98d31c77df78fecf08:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/tuna_1768585599
 * [new ref]         7a02114138329ce802ae1e98d31c77df78fecf08 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7a02114 Update code from upstream