create a new branch below current one git code example
Example 1: git create new branch from current
git checkout -b topic/newbranch
Example 2: create a new branch based on another branch
//when on branch 'dev' make branch 'myFeature' off of 'dev'
git checkout -b myfeature dev
Example 3: git command to create a branch from another branch
$ git checkout -b myfeature dev