O.C.G.A. § 36-35-5

No amendment or revision of any charter made pursuant to this chapter shall become effective until a copy of the amendment or revision, a copy of the required notice of publication, and an affidavit of a duly authorized representative of the newspaper in which the notice was published, to the effect that the notice has been published as provided in this chapter, has been filed with the Secretary of State and in the office of the clerk of the superior court of the county of the legal situs of the municipal corporation. The Secretary of State shall provide for the publication and distribution of all such amendments and revisions at least annually.