git config pull.rebase

git config pull.rebase false
(no output)

git config pull.rebase true
(no output)

Related

git config pull.ff only  

See also

• git pull [ -v | -a ] git request-pull, git pull origin master Pull Request (PR), --no-rebase, --rebase
• git config, .git/config, ~/.gitconfig, --list, --global, Usage: git config, credential.helper