C#: Get the sha1 of the last commit in git repo?

Question

I'm trying to create somewhat of a version tag with branch:sha1.

I've managed to get the branch name, but I can't get the last commits sha1?

It should be fairly similar to JGit for Java as its a port of it, but I can't see any way the API is exposing this?

Here is what I have:

var repository = NGit.Api.Git.Open(Directory.GetParent(System.Reflection.Assembly.GetExecutingAssembly().Location)?.Parent?.Parent?.Parent?.Parent?.FullName);
var branch = repository.GetRepository().GetBranch();
var sha1 = "";

Console.WriteLine($"{branch}:{sha1}");

Answer 1

Thanks to John Skeet's comment recommending LibGit2Sharp, here is how to do it:

var directory = Directory.GetParent(System.Reflection.Assembly.GetExecutingAssembly().Location)?.Parent
    ?.Parent
    ?.Parent
    ?.Parent
    ?.FullName;

using (var repo = new Repository(directory))
{
    var branch = repo.Head.FriendlyName;
    var sha1 = repo.Head.Commits.Last().Sha;
    
    Console.WriteLine($"{branch}:{sha1}");
}