make a new branch from a commit code example

Example 1: create new branch git

$ git checkout -b [name_of_your_new_branch]

Example 2: git branch from commit

You can create the branch via a hash:

git branch branchname <sha1-of-commit>
Or by using a symbolic reference:

git branch branchname HEAD~3
To checkout the branch when creating it, use

git checkout -b branchname <sha1-of-commit or HEAD~3>