Every public official or employee is punishable by a fine not exceeding five thousand dollars ($5,000), or by imprisonment pursuant to subdivision (h) of Section 1170 of the Penal Code for 16 months or two or three years, or in a county jail not exceeding one year, or by both that fine and imprisonment, who knowingly makes any false return, certification or affidavit concerning any initiative, referendum, or recall petition or the signatures appended thereto.