Cal. Gov. Code § 54665

All notes issued pursuant to this article and any renewal thereof shall be payable at a fixed time, except that in the event that the sale of the bonds shall not have occurred prior to the maturity of the notes issued in anticipation of the sale, the treasurer shall, in order to meet the notes then maturing, issue renewal notes for such purpose. No renewal of a note shall be issued after the sale of bonds in anticipation of which the original note was issued. There shall be only one renewal of any note issued pursuant to this article, and such renewal note shall mature within a period not to exceed two years.