основное руководство Git для разработчиков (A Git core tutorial for developers)
WORKING WITH OTHERS, SHARED REPOSITORY STYLE
If you are coming from a CVS background, the style of cooperation
suggested in the previous section may be new to you. You do not
have to worry. Git supports the "shared public repository" style
of cooperation you are probably more familiar with as well.
See gitcvs-migration(7) for the details.