Just found out I have a warrant in Georgia

Hi I don’t have a record (maybe until now) or anything, but I just saw that I have a warrant for my arrest. Location: Atlanta, ga.

I’m going up there Monday to turn myself in. What should I expect? Am i going to be sitting in jail? Also it’s listed wrong. My brakes went out and to avoid hitting another car I slowed it as much as possible and tapped a rail to a business. The warrant says failure to report with injury but no one was injured. A pole was tapped and I know the business has cameras. What do I say and what should I expect? Am I going to be in jail for a long time?