O.C.G.A. § 44-5-11: Grounds for setting aside grants.

Upon a writ of scire facias, grants issued by the state may be set aside by the superior court of the county where the land is located on the ground:

(1) That they were obtained by fraud or willful misrepresentations to the officers of the state by the grantee or those in privity with him;

(2) Of collusion between the grantee and the officers of the state; or

(3) Of fraud, accident, or mistake by the officers of the state, which fraud, accident, or mistake was known to the grantee.