Source

File: wp-includes/class-wp-customize-manager.php

protected function get_changeset_posts( $args = array() ) {
		$default_args = array(
			'exclude_restore_dismissed' => true,
			'posts_per_page'            => -1,
			'post_type'                 => 'customize_changeset',
			'post_status'               => 'auto-draft',
			'order'                     => 'DESC',
			'orderby'                   => 'date',
			'no_found_rows'             => true,
			'cache_results'             => true,
			'update_post_meta_cache'    => false,
			'update_post_term_cache'    => false,
			'lazy_load_term_meta'       => false,
		);
		if ( get_current_user_id() ) {
			$default_args['author'] = get_current_user_id();
		}
		$args = array_merge( $default_args, $args );

		if ( ! empty( $args['exclude_restore_dismissed'] ) ) {
			unset( $args['exclude_restore_dismissed'] );
			$args['meta_query'] = array(
				array(
					'key'     => '_customize_restore_dismissed',
					'compare' => 'NOT EXISTS',
				),
			);
		}

		return get_posts( $args );
	}