The git clone command copies files from the remote site to your local system. The remote site might be an anonymous repository such as GitHub, or a system where you need to log in with an account name and perhaps password.
Clone from a known remote site such as GitHub:
$ git clone http://github.com/ProjectName
Clone from a login/password protected site (perhaps your own server):
$ git clone clif@172.16.183.130:gitTest
clif@172.16.183.130's password: