Hey @damerms,
Am I right in thinking that you are looking to create a branch deploy?
If you’re using Netlify DNS, simply add the branch via the UI and add the branch as a domain alias to update your certificate.
If you’re not using Netlify DNS, there’s a useful guide here for you! [Support Guide] How to use Netlify’s branch deploy feature without Netlify DNS
If you’d like emails when you receive a reply, you can update that here: https://answers.netlify.com/u/damerms/preferences/emails