What is the syntax to create a new branch in Git in Salesforce?

What is the syntax to create a new branch in Git ?

I want to create a new branch in Git by using the following command but its not working. Is this command correct ?

“git checkout branchname”

• This discussion was modified 6 years, 8 months ago by  Gursimran Singh.
• This discussion was modified 6 years, 8 months ago by  Forcetalks.
• This discussion was modified 6 years, 8 months ago by  Forcetalks.