如何在Golang中使用git2go在github中获取最新标签？

I am trying to get the latest github tag from my local repository in golang. For now I am getting all the tags, code is below:

repo, err := git.OpenRepository("/home/defiant/Temp/repo")
    checkErr(err)
    re, err := repo.Tags.List()
    checkErr(err)
    fmt.Println(re)

The result returned is of the format:

[0.1 1.3 1.4]

Here 1.3 is the latest tag. So can someone please help me out in getting only the latest tag?