$ git clone -n https://gitee.com/wency_cn/tuna_1772071268.git /var/lib/mock/dist-an23-build-515159-75118/root/chroot_tmpdir/scmroot/tuna_1772071268
Cloning into '/var/lib/mock/dist-an23-build-515159-75118/root/chroot_tmpdir/scmroot/tuna_1772071268'...
$ git fetch origin c2f177da1665f43fe067938f9b38cfd2a9057809:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/tuna_1772071268
 * [new ref]         c2f177da1665f43fe067938f9b38cfd2a9057809 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c2f177d Update code from upstream