This will turn the shop page permalink into a link for the home page.

woocommerce_get_shop_page_permalink.php

<?php // do not copy this line

/**
 * This will turn the shop page permalink into a link for the home page.
 * @param  str $link The permalink that's presently being filtered.
 * @return str       The permalink you'd like to send instead. 
 */
function jp_woocommerce_get_shop_page_permalink( $link ) {
	$link = get_home_url();
	return $link;
}
add_filter( 'woocommerce_get_shop_page_permalink', 'jp_woocommerce_get_shop_page_permalink' );