How to change shareaholic META tags

Wordpress is installed on a regular server, but I am hosting all my media/images on AWS S3. So every Featured image gets pushed to S3 instead of hosting locally on the site’s server.

All is well, except that the META Tags Shareaholic auto-generates still show my attachment/image URL as being my local domain.

This causes a problem because whenever I click a ‘share’ link, no images come through on the post teasers.

My temporary solution is this (below), but a better solution would be much appreciated.

Wordpress 5.3
Shareaholic Version 8.13.11

Thanks
Rob

 //  /wp-content/plugins/shareaholic/public.php (line: 310)

  if ($thumbnail_src != NULL) {
         $thumbnail_src = str_replace('https://domain.com', 'https://AWS-Domain.com/',$thumbnail_src );
        echo "<meta name='shareaholic:image' content='" . $thumbnail_src . "' />";
      }