No temporary restraining order or preliminary injunction shall ever issue to any municipality of this state, its officers, agents, or employees, enjoining or restraining the enforcement of any ordinance of such municipality, whether valid or invalid, or any proceedings thereunder, until a time and place have been set for the hearing of the application for such temporary restraining order or preliminary injunction, and notice of such time and place, together with a copy of the complaint, has been served upon the mayor or other chief executive officer of such municipality at least 24 hours prior to the time set for such hearing.