Why Would GA Republicans Buy Into The Biden Administration?

Why now, the reporting about a new book to be released in March, pay attention it’s January, about how the 2020 election wasn’t stolen. Yet we have the evidence.
Raffensperger was given the information that there were 364K ineligible voters on the rolls because of address discrepancies on December 16, 2020. And Trump’s call with Raffensperger, the basis of the Fulton County Fani Willis case, took place on January 2, 2021.
Why would GA republicans buy into the Biden administration? And run with the Biden administration?