Upon receipt of an attested copy of the master plan or of any part thereof after the adoption thereof by the planning commission, the governing body shall hold a public hearing thereon. At least ten days’ notice of such hearing shall be published in the official municipal newspaper. No change or addition to the master plan or any part of it as adopted by the planning commission shall be made by the governing body until the proposed change or addition shall have been referred to the planning commission for report thereon and an attested copy of the commission’s report is filed with the governing body. The failure of the planning commission to report within thirty days after the date of the request for the report by the governing body shall be deemed to be an approval by the commission of the additions or changes. If the additions or changes are disapproved by the commission, a two-thirds vote of the entire governing body shall be necessary to pass any ordinance overruling such disapproval.