Absolutely, yes.
See Documentation - Discourse Meta for an example, as it has many subcategories.
Here:
Summary Tag Banners displays the tag name and description in a banner at the top of the page when visiting a tag-filtered topic list (similar to the Category Banners component)
Preview Preview on Discourse Theme Creator
Repository Link https://github.com/discourse/discourse-tag-banners
New to Discourse Themes? Beginner’s guide to using Discourse Themes Install this theme component Features [tag banner] Develop…

I’m confused about the URL you shared…
For example if I have a tag “tiago” my url shows/tag/tiago
, but the url you shared showstags/c/bug/1/email
…?
I selected the email in the tag selector from the Bug category, so it updates the URL to filter email in Bug.
If you select email from /latest
, the URL will be updated to https://meta.discourse.org/tag/email.