$ git clone -n https://gitee.com/src-anolis-os/mariadb.git /var/lib/mock/dist-an23-build-334446-69659/root/chroot_tmpdir/scmroot/mariadb
Cloning into '/var/lib/mock/dist-an23-build-334446-69659/root/chroot_tmpdir/scmroot/mariadb'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-os/mariadb
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ebd2310 disable selftest for loongarch64