LibGit2Sharp.LibGit2SharpException:“too many redirects or authentication replays”

I get LibGit2Sharp.LibGit2SharpException:“too many redirects or authentication replays” when I push the repository.
I use username&&password in CredentialsProvider

using var repo = new Repository(rootPath);
var options = new PushOptions
{
    CredentialsProvider = (url, user, cred) =>
        new UsernamePasswordCredentials { Username = userName, Password = password },
};

var remoteName = "origin";
var remote = repo.Network.Remotes.FirstOrDefault(r => r.Name == remoteName);
 if (remote == null)
{
     repo.Network.Remotes.Add(remoteName, res);
}

 var branch = repo.Branches["main"];
if (branch == null)
 {
     branch = repo.CreateBranch("main");
 }
repo.Branches.Update(branch, b => b.Remote = remoteName, b => b.UpstreamBranch = branch.CanonicalName);
repo.Network.Push(branch, options);

Begin at the PushOptions.CredentialsProvider and repo.Network.Push calls shown in the report, then reproduce the push with the stated username and password setup. Compare the resulting redirect or authentication behavior with the configured remote; done requires identifying a reproducible cause and corrective change, but the issue names no source file or test target.