Pagure "Pull Requests" URL?

[Christopher]

Okay, so, in https://src.fedoraproject.org , repos seem to have two
URLs for SSH access.
One is referred to as "Pull Requests" in the "helpful"
"Clone"
dropdown menu. However, I cannot figure out what this is for.

If the origin is:
ssh://[e-mail]/rpms/zookeeper.git

Then the "Pull Requests" URL for SSH is:
ssh://[e-mail]/requests/rpms/zookeeper.git

Pull requests seem to be in origin, under refs/pull/* (just like
GitHub), but *NOT* in this separate (related?) repo.

So, why does the UI mention this URL at all and what is it actually used for?

(As far as I can tell, it's only used for accidentally pushing working
branches when you use the wrong URL and being unable to subsequently
delete them due to a pre-receive hook. Am I wrong?)