Pushing new branches does not set up tracking branch completely

When you push a local branch that does not exist on the remote (using the refspec overload), libgit2sharp automatically creates a tracking branch, but it does not set up the config for the local branch

i.e. the following config entries are missing:

branch.(branch_name).remote
branch.(branch_name).merge

Currently, I push a new branch like as follows:

string refspec = string.Format("{0}:{1}",
    currentBranch.CanonicalName, currentBranch.CanonicalName);
repo.Network.Push(remote, refspec, handler, credentials);
repo.Branches.Update(repo.Head, delegate(BranchUpdater updater)
{
    updater.Remote = remote.Name;
    updater.UpstreamBranch = repo.Head.CanonicalName;
});

I feel like this should be simplified. Either by doing the BranchUpdater stuff in Push(), or by extending the Push(Branch, ...) overload to let it accept non-tracking branches and do the whole process.

I also did not find a test fixture covering that feature, so the intended behaviour should at least be specified.

Empieza leyendo las sobrecargas de Push y el uso de BranchUpdater que se muestran en la issue; después, inspecciona los fixtures de pruebas de push existentes, porque la issue indica que ninguno cubre este comportamiento. Se considera terminado cuando la ruta de push de una nueva rama compatible establece la configuración de branch.remote y branch.merge, con una prueba que especifique el comportamiento previsto.