git checkout -b

https://git-scm.com/docs/git-checkout

Create a new branch and change to it:

git checkout -b YOUR_NEW_BRANCH_NAME
Switched to a new branch 'YOUR_NEW_BRANCH_NAME'

git checkout -b "Name with spaces"
fatal: 'Name with spaces' is not a valid branch name.

Create a new branch

git branch new_branch_name

git checkout new_branch_name

git push --set-upstream origin new_branch_name

Related

• Create Git branch with current changes

See also

• git checkout [ -b | master | main | -f ]
• git branch, git: upstream, git branch --delete branch name, [ --list | -a | -r | -M ]