Proces to migrate a Forket Project from Eclipse to Android Studio and then update the git repo with the new Android Studio repo.

GITMigrator

Move to the new repo Directory 
cd newrepo

Add all the files to be commited
git --git-dir=/path/to/my/oldrepo/.git/ --work-tree=/path/to/my/newrepo/ add .

Commit the changes
git --git-dir=/path/to/my/oldrepo/.git/ --work-tree=/path/to/my/newrepo/ commit -a -m "This is the Android Studio version"

Add the remote origin
git --git-dir=/home/teocci/AndroidSRC/Camtest0110/.git --work-tree=/home/teocci/AndroidSRC/Camtest01101/ remote add origin https://github.com/your/project.git

Push the changes
git --git-dir=/home/teocci/AndroidSRC/Camtest0110/.git --work-tree=/home/teocci/AndroidSRC/Camtest01101/ git push -u origin master

Now you can delete the directory and clone again the new project as a master
git clone https://github.com/your/project.git