Modify the search placeholder text for the Genesis Framework

search-placeholder.php

/**
* Modify the placeholder text of the default search form in Genesis.
* @author Calvin Makes
* @link http://www.calvinmakes.com/modify-placeholder-text-genesis-search-form/
*/

//* Return our new placeholder text (replace CHILD_THEME_TEXT_DOMAIN with your child theme slug).
add_filter( 'genesis_search_text', 'cm_search_placeholder' );
function cm_search_placeholder() {
	return esc_attr__('New Placeholder Text', CHILD_THEME_TEXT_DOMAIN );
}