Although the files may be browsable on the web interface, you might want to interact with them on your desktop, using one of your favorite programs.
It is possible to download files individually from the web interface.
Note that this "individual download" feature differs from what Git-people call "cloning of the repository". Git-clone involves downloading of the whole repository, whereas this individual download concerns only with the current single file.
When you open a single file, you will see buttons on the top-right of the file:
These buttons represent the actions that you can execute on this specific file, including:
For downloading the file, click on the "download" button:
Then your browser will start downloading the file.