$ git clone -n https://gitee.com/guost123/mariadb.git /var/lib/mock/dist-an23-build-443903-73188/root/chroot_tmpdir/scmroot/mariadb
Cloning into '/var/lib/mock/dist-an23-build-443903-73188/root/chroot_tmpdir/scmroot/mariadb'...
$ git fetch origin 3422fb61d002066f603094284ad367ae4a9c2be6:KOJI_FETCH_HEAD
From https://gitee.com/guost123/mariadb
 * [new ref]         3422fb61d002066f603094284ad367ae4a9c2be6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3422fb6 add support for riscv64