private void AllowAnonRepoClone(Guid repo, bool allow)
{
app.NavigateTo<RepositoryController>(c => c.Edit(repo));
var form = app.FindFormFor<RepositoryDetailModel>();
var repo_clone = form.Field(f => f.AllowAnonymous);
ITH.SetCheckbox(repo_clone.Field, allow);
form.Submit();
ITH.AssertThatNoValidationErrorOccurred();
}