These two fields allow to specify a different default assignee for ticket opened against this package in bugzilla. Note: The EPEL field is always displayed for packages in the 'rpms' namespace regardless of whether it is used in bugzilla or not.
6035556
Disable LTO. https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org/thread/ULGH5JYL7MHKDKTINJLOEN2QG6LOHWH7/