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.
645d1b9
Update description At least the part about snapshotting was obsolete. Let's use the text from https://www.freedesktop.org/wiki/Software/systemd/ with some slight modifications.