git-clone

Clone a repository into a new directory

$ git clone https://github.com/libgit2/libgit2sharp.git

LibGit2Sharp

Repository.Clone("https://github.com/libgit2/libgit2sharp.git", "path/to/repo");

To provide a username and password, pass in CloneOptions.

var co = new CloneOptions();
co.FetchOptions.CredentialsProvider = (_url, _user, _cred) => new UsernamePasswordCredentials { Username = "Username", Password = "Password" };
Repository.Clone("https://github.com/libgit2/libgit2sharp.git", "path/to/repo", co);