i,m using Ubuntu 20.04 and installed Gazebo11
when i tried to download (clone) gazebosim models repository for 1st time after installation (to use them when i,m offline and have no internet connections) using this command in terminal :
git clone https://github.com/osrf/gazebo
i got this error :
fatal: destination path 'gazebo' already exists and is not an empty directory
would you please help me by step-by-step instructions?