During the big fedorahosted migration, I moved the source repository for pam_krb5 to pagure.io, but haven't been able to upload the old release tarballs.
I suspect this is the same issue as https://pagure.io/pagure/issue/1991 which is fixed in 2.14
My attempt to verify this on stg.pagure.io ran into a 500 error while attempting to create the project named pam_krb5, so it looks like there's another bug.
I saw the error raised by your attempt, looks like a mis-configuration of stg, I'll try to fix it later.
This can now be accessed fine with 2.14 :)
Metadata Update from @pingou: - Issue close_status updated to: Fixed - Issue status updated to: Closed (was: Open)
Confirmed. Thank you very much!