Cal. Pub. Contract Code § 10421
The state, or any person acting on behalf of the state, may bring a civil action seeking a determination by the Superior Court that a contract or other transaction has been entered in violation of any provision of this chapter. If the court finds substantial evidence of such a violation, it may issue a temporary injunction to prevent any further dealings upon the contract or other transaction, pending a final determination on the merits of the case. If the action results in a final determination that the contract or other transaction has been entered in violation of this chapter, it shall be void, and the state or person bringing the action shall be awarded costs and attorney's fees. This section shall not be construed to permit an award of costs and attorney fees to the person or entity contracting or otherwise transacting with the state.
Ca. Pub. Cont. Code § 10421