git checkout -b <branch_name>

def checkout_branch(self, branch_name):
        """ git checkout -b <branch_name> """
        cmd = [
            "git",
            "checkout",
            "-b",
            self.get_cherry_pick_branch(branch_name),
            f"{self.upstream}/{branch_name}",
        ]
        try:
            self.run_cmd(cmd)
        except subprocess.CalledProcessError as err:
            click.echo(
                f"Error checking out the branch {self.get_cherry_pick_branch(branch_name)}."
            )
            click.echo(err.output)
            raise BranchCheckoutException(
                f"Error checking out the branch {self.get_cherry_pick_branch(branch_name)}."
            )