git.Fetch with Progress hangs up after 90 seconds

[missionsix]

I am working on very large repository (8+ gb), and am attempting to fetch the entire remote repository with go-git. When I set the following, I get an EOF from the source repository.

This makes me think that go-git does not properly utilize the side-channel.

    err = repo.FetchContext(ctx, &git.FetchOptions{
        RemoteName: "origin",
        RefSpecs:   []gitconfig.RefSpec{gitconfig.RefSpec(refspec)},
        Progress:   os.Stdout,
        Force:      true,
    })

Setting Progress: nil allows it to complete