How to download and setup upspin
Open terminal and run command
git clone https://github.com/upspin/upspin.git
git clone is used to create a copy or clone of upspin repositories.
You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with upspin https://github.com/upspin/upspin/archive/master.zip
Or simply clone upspin with SSH
[email protected]:upspin/upspin.git