git_checkout_iz_origin_master.txt

$ git checkout master 
Warning: you are leaving 1 commit behind, not connected to
any of your branches:

  cec17e8 Tekst commita

If you want to keep them by creating a new branch, this may be a good time
to do so with:

 git branch new_branch_name cec17e8044b15092e7e85daf4f25240a418eb54b

Switched to branch 'master'
Your branch is ahead of 'origin/master' by 3 commits.