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_2-0_3_fc10:HEAD:mesa-7.2-0.3.fc10.src.rpm:1222723005 mesa-7_3-1_fc11:HEAD:mesa-7.3-1.fc11.src.rpm:1234080261