I had deleted pagure from my account, now i am trying to fork it but it says - "Repo "forks/rahulbajaj/pagure" already exists ".
maybe an exception here: https://github.com/pypingou/pagure/blob/36a91b5e47c4e9ad8b285c1ff9d022f7ceb5bfce/pagure/ui/repo.py#L1214
So what happens is that until https://pagure.io/pagure/pull-request/1015 we sometime had problems deleting projects, so the entry was deleted from the DB but the not the git repos on disk.
I have cleaned those so you should not be able to re-fork the project :)
Sorry for the annoyance