More details see Git за полчаса

• Clone repo to the local computer:

  git clone git@theory.sinp.msu.ru:repo 

• Prepare new file(s) for commit:

  git add file1 file2 ... 
  git add -A (for all files)

• Commit file(s):

  git commit file1 file2 ...
  git commit -A (for all files)

• Push changes to repo:

  git push