Correct format to link to specific topics (or hash tags) within the same Discourse site?

What would be the correct format to link to specific topics (or hash tags) within the same discourse site? I would prefer not to hard code the sitename in the URL and would like to use relative links to topics/hash tags. In the example I only see a complete URL.

EDIT: This what I found for everyone’s reference.

You can remove the domain from the URL and use just the relative path starting at the root path
e.g.

If the site URL to the topic is
https://my.site.com/t/topic-to-link/24

then you can use:
/t/topic-to-link/24

You can also use just the topic slug and number (this helps if the topic name changes and you want discourse to still track the number of clicks, which won’t happen when the topic names changes the url includes the topic name):
/t/24

HOWEVER: while you can enter these relative URLs, it appears that discourse changes the relative URL’s to absolute URL’s internally. So it appears that you CANNOT use relative URL’s.