Honestly this race seems safe Kemp to me. By the time of the primary, the "betrayal" of Trump becomes less and less important, and I'm struggling to see Jones's actual constituency other than extreme diehard Trumpers, which do constitute an insignificant number of people, but not enough to win the primary. The conservative base of Georgia isn't going to trust some random black guy from Dekalb county who recently turned Republican lol.
Kemp's favorability among Republicans in this internal of +4 is way lower than +44 found in the AJC poll, which is probably closer to reality, so safe Kemp.
Agreed things should only get better for Kemp in the primary as we get closer to election day but if Trump endorsed Jones things could really be shaken up