Unable to edit theme_options.php without editing the parent theme

How to edit theme_options.php without editing the parent theme ?? I have catch-kathmandu theme.I have created its child theme. I have made certain changes in theme_options.php (inc/panel/theme_options.php -> catchkathmandu_theme_options_do_page() function ). To make the changes work i had to comment following line in my parent's function.php require( get_template_directory() . '/inc/panel/theme-options.php' ); similarly i had to add the following in my child theme's function.php require( get_stylesheet_directory() . '/inc/panel/theme-options.php' ); Is there any way to make the changes without making any changes to parent theme ?