using (var repo = new Repository("path/to/your/repo"))
            {
                LibGit2Sharp.PushOptions options = new LibGit2Sharp.PushOptions();
                options.CredentialsProvider = new CredentialsHandler(
                    (url, usernameFromUrl, types) =>
                        new UsernamePasswordCredentials()
                        {
                            Username = USERNAME,
                            Password = PASSWORD
                        });
                repo.Network.Push(repo.Branches[BRANCHNAME], options);
            }