$ git clone -n https://gitee.com/fundawang/mariadb.git /var/lib/mock/dist-an23-build-271861-64151/root/chroot_tmpdir/scmroot/mariadb
Cloning into '/var/lib/mock/dist-an23-build-271861-64151/root/chroot_tmpdir/scmroot/mariadb'...
$ git fetch origin bce554733c4fbf7dbf8806396943eb3c50e121d9:KOJI_FETCH_HEAD
From https://gitee.com/fundawang/mariadb
 * [new ref]         bce554733c4fbf7dbf8806396943eb3c50e121d9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bce5547 br zstd