r2.Trailer = r.Trailer.Clone()
	}
	if s := r.TransferEncoding; s != nil {
		s2 := make([]string, len(s))
		copy(s2, s)
		r2.TransferEncoding = s2
	}
	r2.Form = cloneURLValues(r.Form)
	r2.PostForm = cloneURLValues(r.PostForm)
	r2.MultipartForm = cloneMultipartForm(r.MultipartForm)

	// Copy matches and otherValues. See issue 61410.
	if s := r.matches; s != nil {
		s2 := make([]string, len(s))