Now do this…

• Change the/themes/ folder name from /hello-theme-child-master/ to /clientname/
• In the style.css of /clientname/ replace the Theme name with clientname
• In the functions.php of /clientname/ replace all of the text with

<?php
add_action( 'wp_enqueue_scripts', 'enqueue_parent_styles' );

function enqueue_parent_styles() {
   wp_enqueue_style( 'parent-style', get_template_directory_uri().'/style.css' );
}