Cal. Welf. and Inst. Code § 7361
When the superintendent is unwilling to certify to the discharge of an unrecovered judicially committed patient, upon request, and so certifies in writing, giving his reasons therefor, any superior judge of the county in which the hospital is situated, upon such certificate, and upon any other proofs produced before him, after affording opportunity for a hearing to the superintendent, may direct, by order, the discharge of the patient, upon such security to the people of the state as he may require for the good behavior and maintenance of the patient. The certificate and the proof, and the order granted thereon, shall be filed in the clerk's office of the county in which the hospital is situated, and a certified copy of the order shall be filed in the hospital from which the patient is discharged.
Ca. Welf. and Inst. Code § 7361