Make cache busting easier in Genesis by enqueueing a genesis child theme stylesheet with the child theme version appended.

genesis-cache-busting.php

<?php
// Remove the default Genesis child theme CSS
remove_action( 'genesis_meta', 'genesis_load_stylesheet' );
add_action( 'wp_enqueue_scripts', 'prefix_load_stylesheet' );
/**
 * Get the current child theme version
 * and use it to bust the cache by appending
 * it to the CSS output.
 *
 * @author FAT Media
 * @link http://youneedfat.com
 */
function prefix_load_stylesheet() {
	// Get the theme info.
	$my_theme = wp_get_theme();
	$theme_uri = get_stylesheet_directory_uri();
	$theme_version = $my_theme->Version;

	// Enqueue the stylesheet.
	wp_enqueue_style( 'prefix-styles', $theme_uri . '/style.css', array(), $theme_version );
}