Can you confirm?

In addition, you may want to add a ‘file-name’ field, so that the
checkout has a name more descriptive than ‘git-checkout’, as is done for
libwebsockets:

  (package
    (name "libwebsockets")
    (version "1.2")
    (source (origin
              ;; The project does not publish tarballs, so we have to take
              ;; things from Git.
              (method git-fetch)
              (uri (git-reference
                    (url "git://git.libwebsockets.org/libwebsockets")
                    (commit (string-append "v" version
                                           "-chrome26-firefox18"))))
              (sha256
               (base32
                "1293hbz8qj4p27m1qjf8dn97r10xjyiwdpq491m87zi025s558cl"))
              (file-name (string-append name "-" version))))  ;; <--- here

HTH!

Ludo’.