Hi,

Small example:

function order_posts_by_title( $query ) {    
if (is_home()) {
$query-set( 'orderby', 'title' );        
$query->set('order', 'ASC');    }
}
add_action( 'pre_get_posts', 'order_posts_by_title' );

Hi,

Sorry, there are no simple way to overwrite it in the child theme. Here the example of query:

add_action( 'pre_get_posts', 'custom_post_type_order' );
function custom_post_type_order($query){
    if( is_admin() ) {
        return $query;
    }
    if ($query->query_vars['post_type'] == 'thegem_pf_item'' ) {
        $query->set('order', 'DESC');
    }
}

But sorry,  I'm not sure that it will work correctly everywhere.