To access a GitHub repository, press Cmd/Ctrl E (or use the “+” button below a block), and find the option Import GitHub repository in the Command Bar.
You can then provide the repository name, and optionally a branch and a secret for private data access. Once the repository has been cloned, you can mount it to any runtime - here we access the repository from a Bash runtime.
A mount point is automatically added, but you can modify it using the runtime's settings (the gear button next to the runtime's name on the sidebar).
Hope that was useful! If you need more help, don't hesitate to reach out.