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.
gdk-pixbuf2-2_21_4-2_fc14:HEAD:gdk-pixbuf2-2.21.4-2.fc14.src.rpm:1277731133