Clkim offers you a unique interface to update and control your OG:Meta tags:
Using our Meta Tag editor you will be able to specify how your links get indexed on Facebook.
By default we will crawl the destination URL and fetch their OG:Meta info. After which you can override your link's OG:Meta info. You can update this info anytime and improve your link's likelihood to get clicked (clickbait). Please note that after every time you update the link - you must submit it to facebook's debug tool so that they will update the OG:Meta params in their index.