All new GitHub repos are created with a default branch of main, instead of the older master.

If I try to clone such a repo with the SingleBranch option enabled, I see an error like couldn't find remote ref "refs/heads/master".

This code demonstrates the issue (the repo https://github.com/hairyhenderson/hitron_coda.git has a default branch of main):

package main

import (
	"fmt"

	"github.com/go-git/go-billy/v5/memfs"
	"github.com/go-git/go-git/v5"
	"github.com/go-git/go-git/v5/storage/memory"
)

func main() {
	fs := memfs.New()
	storer := memory.NewStorage()

	opts := &git.CloneOptions{
		URL:          "https://github.com/hairyhenderson/hitron_coda.git",
		SingleBranch: true,
	}

	_, err := git.Clone(storer, fs, opts)
	if err != nil {
		fmt.Println(err)
	}
}

$ go run main.go
couldn't find remote ref "refs/heads/master"

If I set SingleBranch to false it succeeds, but this isn't desirable for my use-case since I want to minimize what I'm pulling down.

The issue seems rooted in this code, which defaults to the plumbing.Master constant when SingleBranch is true and ReferenceName defaults to HEAD.