gnu: thefuck: Don't use unstable tarball.

* gnu/packages/admin.scm (thefuck)[source]: Use GIT-FETCH and
GIT-FILE-NAME.

gnu/packages/admin.scm

@@ -2015,15 +2015,16 @@ throughput (in the same interval).")
   (package
     (name "thefuck")
     (version "3.28")
-    (source (origin
+    (source
-              (method url-fetch)
+     (origin
-              (uri (string-append "https://github.com/nvbn/thefuck/archive/"
+       (method git-fetch)
-                                  version ".tar.gz"))
+       (uri (git-reference
-              (file-name (string-append name "-" version ".tar.gz"))
+             (url "https://github.com/nvbn/thefuck.git")
-              (sha256
+             (commit version)))
-               (base32
+       (file-name (git-file-name name version))
-                "1i11qlnbg95nx7dcf6wqvfz7b230dqr5m981md4hvyaa1qw3xj5m"))
+       (sha256
-              (patches (search-patches "thefuck-test-environ.patch"))))
+        (base32 "070b2sx8r0b4hry6xg97psxlikxghmz91zicg2cm6kc1yhgz4agc"))
+       (patches (search-patches "thefuck-test-environ.patch"))))
     (build-system python-build-system)
     (arguments
      '(#:phases