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.
e4c0ddc
http://code.stapelberg.de/git/i3/patch/?id=1d100d6e168d13752e79918f2410ccc7c492d700