gnu: emacs-commander: Don't use unstable tarball.

* gnu/packages/emacs-xyz.scm (emacs-commander)[source]: Use GIT-FETCH and
GIT-FILE-NAME.

gnu/packages/emacs-xyz.scm

@@ -7268,13 +7268,13 @@ as bold, underscore or italic.")
     (version "0.7.0")
     (source
      (origin
-       (method url-fetch)
-       (uri (string-append "https://github.com/rejeep/commander.el/archive/v"
-                           version ".tar.gz"))
-       (file-name (string-append name "-" version ".tar.gz"))
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/rejeep/commander.el.git")
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
        (sha256
-        (base32
-         "196s2i15z7gwxa97l1wkxvjnfmj5n38wwm6d3g4zz15l2vqggc2y"))))
+        (base32 "1j6hhyzww7wfwk6bllbb5mk4hw4qs8hsgfbfdifsam9c6i4spm45"))))
     (build-system emacs-build-system)
     (propagated-inputs
      `(("emacs-dash" ,emacs-dash)