All this information is particular for the Proximus Magic 32A particular, but it will still give you an overview of how the procedure actually works.
So, last Friday while working on Freesound 2, I stumbled upon an interesting problem I need to solve using git. The problem is as follows: say you have a clone of a public git url (for example http://github.com/bram/freesound). Now, you're making changes in this repository and at some point you want these changes back into the origin repository.