meaning of fork on github code example

Example 1: fork on github code

$ git clone https://hostname/YOUR-USERNAME/Spoon-Knife
> Cloning into `Spoon-Knife`...
> remote: Counting objects: 10, done.
> remote: Compressing objects: 100% (8/8), done.
> remove: Total 10 (delta 1), reused 10 (delta 1)
> Unpacking objects: 100% (10/10), done.

Example 2: fork on github code

$ git remote -v
> origin  https://hostname/YOUR_USERNAME/YOUR_FORK.git (fetch)
> origin  https://hostname/YOUR_USERNAME/YOUR_FORK.git (push)