In my current company, for security reasons, our windows computers are configured to use a corporate proxy for all our web accesses. To avoid errors like fatal: unable to access ...: Received HTTP code 407 from proxy after CONNECT, we have to set up git to use this proxy with the right authentication settings.

GIT configuration

HTTP

In Git BASH, in global mode

$ git config --global http.proxy http://user:pwd@proxy-url:proxy-port/

HTTPS

In Git BASH, in global mode

$ git config --global https.proxy http://user:pwd@proxy-url:proxy-port/

Now we can use remote git commands without network error.