About GitHub website

[TulipVorlax]

Followings the instructions, i get the following error (at the end) :

Code:

Windows PowerShell
Copyright (C) 2009 Microsoft Corporation. Tous droits réservés.

E:\[...]\GitHub\wings [master]> git remote -v
origin  https://github.com/TulipVorlax/wings.git (fetch)
origin  https://github.com/TulipVorlax/wings.git (push)
E:\[...]\GitHub\wings [master]> git checkout master
Already on 'master'
E:\[...]\GitHub\wings [master]> git fetch origin
E:\[...]\GitHub\wings [master]> git reset --hard origin/master
HEAD is now at ba74547 Updated to 1.4.1.137
E:\[...]\GitHub\wings [master]> git rebase dgud/master
fatal: Needed a single revision
invalid upstream dgud/master