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.
gcc-4_4_0-0_3:HEAD:gcc-4.4.0-0.3.src.rpm:1232130841 gcc-4_4_0-5:HEAD:gcc-4.4.0-5.src.rpm:1242291126