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.
mesa-7_1-0_36_fc9:F-9:mesa-7.1-0.36.fc9.src.rpm:1214593148 mesa-7_1-1_fc9:F-9:mesa-7.1-1.fc9.src.rpm:1219955239