GITHUB_SETUP.md

For personal account access

git config core.sshCommand "ssh -i ~/.ssh/id_shivamashtikar -o IdentitiesOnly=yes -F /dev/null"
git config user.name "Shivam Ashtikar"
git config user.email "lightningshivam@gmail.com"

you can check if it is updated in current directory using

cat .git/config