Ok, so if I understand you correctly:
You have a server where you are storing your git repositories, which you can interact with via
git clone http://GIT_SERVER
git clone ssh://GIT_SERVER
Now, you’d like to add a GUI to view your git repositories stored on
GIT_SERVER, but you dont want to move or copy the repositories to have them stored by Gitea itself.
Would you be running Gitea on
GIT_SERVER or on another server?
If you’d run Gitea on
GIT_SERVER, maybe you’d be able to have them both use the same directory for repository storage, and thus point the repos out to Gitea?
If my interpretation is correct, maybe someone with some deeper knowledge can help out with what they think, if it’s possible or not.
Basically: “Is it possible to use Gitea as a GUI-layer on top of an external Git service, without making changes to the repositories”?