Unable to run https git clone using go-git and access token

Using go-git/v5 and trying to clone over https as follows:

	_, err := git.Clone(memory.NewStorage(), fs, &git.CloneOptions{
		URL:           repo,
		ReferenceName: plumbing.ReferenceName(branch),
		Depth:         1,
		SingleBranch:  true,
		Auth:          &http.TokenAuth{Token: string(token)},
	})

where token is a string of the form ghp_XXXXXXXXX (my personal GH access token)

and repo equals to my private repo https://github.com/pkaramol/arepo

The error is

"net/http: invalid header field value \"Bearer ghp_XXXXXXXXX`\\n\" for key Authorization"

I have also trying using basic auth with my username and the token as password

	_, err := git.Clone(memory.NewStorage(), fs, &git.CloneOptions{
		URL:           repo,
		ReferenceName: plumbing.ReferenceName(branch),
		Depth:         1,
		SingleBranch:  true,
		Auth:          &http.BasicAuth{Username: "pkaramol", Password: token},
	})

Now the error becomes:

authentication required

What is the proper way of cloning over https?

The token has repo scope fwiw

edit:

the fs is instantiated as follows

fs := memfs.New()

the http package used is the following

"github.com/go-git/go-git/v5/plumbing/transport/http"

This should work:

package main

import (
	"os"
	"fmt"

	"github.com/go-git/go-billy/v5/memfs"
	"github.com/go-git/go-git/v5/plumbing"
	"github.com/go-git/go-git/v5/plumbing/transport/http"
	"github.com/go-git/go-git/v5/storage/memory"

	git "github.com/go-git/go-git/v5"
)

func main() {
	token := "ghp_XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"

	fs := memfs.New()

	_, err := git.Clone(memory.NewStorage(), fs, &git.CloneOptions{
		URL:           "https://github.com/username/reponame",
		ReferenceName: plumbing.ReferenceName("refs/heads/main"),
		Depth:         1,
		SingleBranch:  true,
		Auth:          &http.BasicAuth{Username: "username", Password: token},
		Progress:      os.Stdout,
	})

	if err != nil {
		fmt.Println(err)
	}

	fmt.Println("Done")
}