$ git clone -n https://gitee.com/wenyuzifang/mariadb.git /var/lib/mock/dist-an23-build-481046-74252/root/chroot_tmpdir/scmroot/mariadb
Cloning into '/var/lib/mock/dist-an23-build-481046-74252/root/chroot_tmpdir/scmroot/mariadb'...
$ git fetch origin c8b97a9a86e3789f6644c3519d352e5d038d7e3f:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/mariadb
 * [new ref]         c8b97a9a86e3789f6644c3519d352e5d038d7e3f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c8b97a9 Update code from upstream