This gist walks through the steps of creating a Guacamole repository fork on Github. The Guacamole project is currently hosted on Github. For development purposes, we had created a fork on Github and document the steps.

guacamole-fork-on-github

The guacamole source files can be found on sourceforge. To create a fork on github, follow these steps:
 
Clone the git repository
$ git clone git://guacamole.git.sourceforge.net/gitroot/guacamole/libguac-client-vnc
 
Navigate to the directory
$ cd libguac-client-vnc
 
Create a new repository on github. After creating the repository, go to the Settings > collaborators
and add yourself (and other contributors) to the collaborators list.
 
Add github as a remote to the local repository
$ git remote add github [email protected]:cmujedi/libguac-client-vnc.git
 
Please note that sourceforge is already marked as origin, so use github as the alias for the new remote. 
To view all remotes, use 
$ git remote -v
 
Push the repository to github
$ git push -u github master
 
You can get the latest updates from the sourceforge repository
$ git fetch origin
 
Merge the changes
$ git merge origin/master
 
Perform all the above steps for all the other Guacamole repositories
git://guacamole.git.sourceforge.net/gitroot/guacamole/libguac-client-rdp
git://guacamole.git.sourceforge.net/gitroot/guacamole/libguac
git://guacamole.git.sourceforge.net/gitroot/guacamole/guacd
git://guacamole.git.sourceforge.net/gitroot/guacamole/guacamole-ext
git://guacamole.git.sourceforge.net/gitroot/guacamole/guacamole-common-js
git://guacamole.git.sourceforge.net/gitroot/guacamole/guacamole-common-auth
git://guacamole.git.sourceforge.net/gitroot/guacamole/guacamole-common
git://guacamole.git.sourceforge.net/gitroot/guacamole/guacamole