Package source not uploaded to git repository

Using the GoLand Git interface, I found that the packages I had downloaded from GitHub, etc, were not getting saved to my repository. The directory structure was, but not the source files, and the directory structure was only there to about four levels deep.

Now, the interface *says* they've been committed, but they're not actually in my repository, and the history of the files shows them as belonging to someone else.It looks as if the packages are still considered to be separate repositories, but I don't see a .git folder in any of them.

I'm not sure if this is a Go, GoLand, or Git question, but I don't know how to even Google on this.