$ git clone -n https://gitee.com/hongwei-qin/mariadb.git /var/lib/mock/dist-an8.10-build-505118-74857/root/chroot_tmpdir/scmroot/mariadb
Cloning into '/var/lib/mock/dist-an8.10-build-505118-74857/root/chroot_tmpdir/scmroot/mariadb'...
$ git fetch origin b46cd5cf6a9167191a944b435a4052bfe85ab42a:KOJI_FETCH_HEAD
From https://gitee.com/hongwei-qin/mariadb
 * [new ref]         b46cd5cf6a9167191a944b435a4052bfe85ab42a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b46cd5c update to 8.10.0