How to clear/reset git config commit.gpgsign to true

Question

Hello Im trying to set true to git gpg config, but it have 2 values how do i remove the false value ?

abc@abc-ltmzmtx abc % git config --global commit.gpgsign true
abc@abc-ltmzmtx abc % git config --list | grep gpg           
commit.gpgsign=true
commit.gpgsign=false