In your custom module etc/di.xml
<?xml version="1.0" ?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
<preference for="Magento\Catalog\Block\Product\View\Options\Type\Select\Checkable" type="VendorName\ModuleName\Rewrite\Checkable"/>
</config>
In VendorName/ModuleName/Rewrite/Checkable.php
<?php
/**
* Copyright © All rights reserved.
* See COPYING.txt for license details.
*/
declare(strict_types=1);
namespace VendorName\ModuleName\Rewrite;
class Checkable extends \Magento\Catalog\Block\Product\View\Options\Type\Select\Checkable
{
protected $_template = 'VendorName_ModuleName::product/composite/fieldset/options/view/checkable.phtml';
}