I'd do a search against all the tickets: https://pagure.io/fedora-infrastructure/issues?status=all&search_pattern=+registry and go through the list

Too much noise to filter. Can be distracted. Is it possible to add duplicate information to ticket metadata and list all duplicates in right hand pane?

Currently, Pagure has no way of marking a particular issue as a duplicate of another issue.

Is what you are trying to do is find all the tickets that may have been closed as a duplicate of 6570?

As a pagure user, I want a quick way to check ticket duplicates.

As a pagure user, I want a quick way to check ticket duplicates.

abitrolly, just trying to figure out what you mean by "check ticket duplicates".

1. See duplicates in the left column or see the link "check duplicates" in the left column.
2. See if a ticket is a duplicate of another in the left column with a link to master ticket there.

not sure about it, let's put it on the 6.0 milestone and further discuss it at a later point