Pull a specific commit using libgit2sharp

Question

hopefully someone call help. First off, I am pretty new to git, so forgive me if I make some mistakes in explaining my question.

I would like to pull the source code as it exists up to a specific commit using the library using libgit2sharp. So if there is a history of

1. Commit
2. Commit
3. Commit
4. Commit
5. Commit
6. Commit
7. Commit
8. Commit
9. Commit
10. Commit

I would like to be able to pull the source code for 5, or any other number in that list. None of the source will be tagged so I have to use the commits for the pull. Hopefully someone can help.

I have looked at https://github.com/libgit2/libgit2sharp/wiki/git-pull but it does not appear to let me pass in a sha or commit id.

Edited my question to be clear I am using the library.

Adaxial

git pull is just a git fetch followed by a git merge on the given tracked branch. You're dealing with commits here and I assume you've already got the commits locally so just git merge sha-1. – Tarsus

Adam, I am using the library libgit2sharp, and not the command line. Thanks, but I need how to accomplish this using the library. However, based on my research that is exactly the steps I need to accomplish. – Adaxial

why dont you use standard git? – Butyraceous

Please, I would rather not derail the question with a discussion about why I am not using the command line. :) Just suffice it to say I am using the library and would like to know how to accomplish the goal using the library. – Adaxial

LibGit2 is quite low level library, you need to really understand Git data base (all main data structures) by heart to proceed. That said, you basically need to reimplement a big block, so called git checkout using a lot of small bricks. – Marni

Answer 1

So another dev answered the question. All I needed to do was a clone, then a checkout against the commit I wanted to reset to. This seems to work the way I wanted.

//clone the master 
dir = Path.Combine(localPath, "Target");
Directory.CreateDirectory(dir);
Repository.Clone(tfsUri, dir);

//reset master to the base of the branch
using (var localRepo = new Repository(dir))
{
    var localCommit = localRepo.Lookup<Commit>(priorCommitId);
    Commands.Checkout(localRepo, localCommit);
}

Not sure if this is what you meant @0andriy, but your comment was a bit confusing.

Adaxial

I meant that instead of git checkout call in the terminal you need to do a lot. Besides that, above is a cargo cult, that you have no clue about what it's doing internally. That said, you can easily corrupt data in your repository without knowing what happened. – Marni