Currently, it is impossible to fetch all of the issues as libpagure doesn't have the required option (which are available in https://pagure.io/api/0/#issues-tab )
libpagure
We should be able to fetch all of the issues:
pagure.list_issues(per_page=100, page=page, status='all')
https://pagure.io/libpagure/pull-request/47