Git fetch and checkout a remote

Command: git checkout --track origin/remoteBranchName

$ git branch -a
* master
  remotes/origin/HEAD -> origin/master
  remotes/origin/improveGroovyCodeAgain
  remotes/origin/master

$ git checkout --track origin/improveGroovyCodeAgain
Switched to a new branch 'improveGroovyCodeAgain'
Branch 'improveGroovyCodeAgain' set up to track remote branch 'improveGroovyCodeAgain' from 'origin'.

$ git branch -a
* improveGroovyCodeAgain
  master
  remotes/origin/HEAD -> origin/master
  remotes/origin/improveGroovyCodeAgain
  remotes/origin/master