As for Biden giving Trump a pardon, he is more likely to organize a January 6th riot to prevent the certification of the electoral vote by Congress.
The current GA governor is term limited and the next election is in 2026. I doubt a Republican hopeful would win the primary without pledging to pardon Trump. But if the Democratic wins the office… maybe Trump should schedule a meeting with the head of state of a country without an extradition treaty with the US in January 2029 and not return.