reload

# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 30
      def reload(*)
        super.tap do
          @previously_changed = ActiveSupport::HashWithIndifferentAccess.new
          @mutations_before_last_save = nil
          @attributes_changed_by_setter = ActiveSupport::HashWithIndifferentAccess.new
          @mutations_from_database = nil
        end
      end