ScriptCS libgit2 sample. You need to manually copy the NativeBinaries folder from the LibGit2Sharp folder into the bin folder if you're using 0.5.* of ScriptCS

.gitignore

bin
packages

app.csx

using LibGit2Sharp;
using System.IO;

static Repository InitOrOpen(string path) {
    var gitBase = Repository.Discover(path);

    if (gitBase == null) {
        Console.WriteLine("Creating repo");
        return Repository.Init(path);
    }
    Console.WriteLine("Opening existing");
    return new Repository(gitBase);
}

const string path = Environment.CurrentDirectory;
Console.WriteLine("Here... we... go!");
using (var repo = InitOrOpen(path)) {
    var file = Path.Combine(path, "sample.txt");

    if (!File.Exists(file)) {
        File.CreateText(file).Close();
    }

    using (var sw = new StreamWriter(file)) {
        sw.write(DateTimeOffset.Now.ToString());
    }

    repo.Index.Stage("*");
    repo.Commit("Did it for the lulz", new Signature("Awesome Dude", "awesome@dude.io", DateTime.Now));
    Console.WriteLine("All done!");
}

packages.config

<?xml version="1.0" encoding="utf-8"?>
<packages>
    <package id="LibGit2Sharp" version="0.11.0.0" targetFramework="net45" />
</packages>

It seems when you run this that LibGit2Sharp raises an error about the ignored folders being 'Access Denied'.

Also if you change the output directory to be nested, swap to a new branch and run it creates a nested git repo