Of course...there's an unholy alliance in the south between black Democrats and Republicans.
Not as common as it's made out to be, fwiw. More often, the black democrats are uninvolved bystanders who coincidentally benefit from Republican mapmakers because it's convenient to make the legally-required VRA districts to be the Dem-packed districts their gerrymander needs.
The only time actual collusion happened in the Georgia Assembly was in the creation of the maps used 92-94; once they saw the electoral aftermath, the leaders of the black caucus were very apologetic to the rest of the party.