In the case your website is live and you want to preview changes before your visitors see it.
The way to go is to have 2 versions of your site (i.e. preprod and prod), it means 2 forks of the same repository so you can do pull requests to make your changes live. You may want to create an organisation to hold the main repository:
- the organization will have the main repo and it is what your visitors see
- your personal account will have a fork of this same repo and that is what you edit and preview
Here is a real life example:
- my site is cto-bro.com
- it is served from this repo (internet-de-france/cto-bro.com)
- when I want to edit the content, I do in on this repo (lexoyo/cto-bro.com) with stastic installed on it
- so my preview is available on
https://lexoyo.me/cto-bro.com/fr(I have a custom domain on all my personal github pages)