PlainClone returns "invalid auth method" error

[kimdre]

I'm trying to implement the BasicAuth method for HTTP cloning from Github using a Access Token by following the example code, but whatever I try I always get the error invalid auth method.

This is the function that returns the AuthMethod with my Github PAT:

func HttpTokenAuth(token string) transport.AuthMethod {
	return &githttp.BasicAuth{
		Username: "oauth2", // can be anything except an empty string
		Password: token,
	}
}

In my CloneRepository function I try to use this AuthMethod in the CloneOptions:

func CloneRepository(path, url, ref string, skipTLSVerify bool, proxyOpts transport.ProxyOptions, auth transport.AuthMethod, cloneSubmodules bool) (*git.Repository, error) {
	err := os.MkdirAll(path, filesystem.PermDir)
	if err != nil {
		return nil, fmt.Errorf("failed to create directory %s: %w", path, err)
	}

	opts := &git.CloneOptions{
		RemoteName:    RemoteName,
		URL:           url,
		SingleBranch:  true,
		ReferenceName: plumbing.ReferenceName(ref),
		Tags:          git.NoTags,
		Auth:          auth,
	}

	if cloneSubmodules {
		opts.RecurseSubmodules = git.DefaultSubmoduleRecursionDepth
	}

	if IsSSH(url) {
		err = addToKnownHosts(url)
		if err != nil {
			return nil, fmt.Errorf("failed to add host to known_hosts: %w", err)
		}

		opts.URL = convertSSHUrl(url)
	} else {
		opts.InsecureSkipTLS = skipTLSVerify

		if proxyOpts != (transport.ProxyOptions{}) {
			opts.ProxyOptions = proxyOpts
		}
	}

	return git.PlainClone(path, false, opts)
}

But I always get the error invalid auth method. Is there something I'm missing or doing wrong?
My token is valid and I could already clone the repository when I added the basic auth string directly by modifying the clone url (https://oauth2:<token>@github.com/my/repo.git)

[dandeandean]

I'm having the same issue, but for pulling a private repository... Were you ever able to figure this out?

Edit:
After looking harder at the issues, it looks like this was the issue I was having: #1080

[kimdre]

For me the issue was that I had forgotten that I had some Git submodules in my repository that had a SSH clone url configured but I tried to clone the main repository via HTTP and basic auth.
After changing all submodule urls to http it was working.