$ git clone -n https://gitee.com/wenyuzifang/tuna.git /var/lib/mock/dist-an23-build-481914-74252/root/chroot_tmpdir/scmroot/tuna
Cloning into '/var/lib/mock/dist-an23-build-481914-74252/root/chroot_tmpdir/scmroot/tuna'...
$ git fetch origin 9b3688efa18bdd7fa71170296a735fbaca28bbf5:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/tuna
 * [new ref]         9b3688efa18bdd7fa71170296a735fbaca28bbf5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9b3688e Update code from upstream