$ git clone -n https://gitee.com/wency_cn/mariadb_1770916446.git /var/lib/mock/dist-an23-build-514252-75110/root/chroot_tmpdir/scmroot/mariadb_1770916446
Cloning into '/var/lib/mock/dist-an23-build-514252-75110/root/chroot_tmpdir/scmroot/mariadb_1770916446'...
$ git fetch origin dde647d36b8b025687b16020c73dee124d353edb:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/mariadb_1770916446
 * [new ref]         dde647d36b8b025687b16020c73dee124d353edb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dde647d Update code from upstream