38f205566f20_make_data_in_copr_id_name_in_package__py (script): make data in (copr_id, name) in package table unique, see Bug 1382243 - Multiple rows were found for one()
Assume that there are no two packages with the same name in the same copr both having some builds referencing them
(otherwise manual "rebinding" of the builds to just one of the packages is needed).