gnu: pidentd: Don't use unstable tarball.

* gnu/packages/networking.scm (pidentd)[source]: Download using
git-fetch.

gnu/packages/networking.scm

@@ -2037,13 +2037,14 @@ (define-public pidentd
     (version "3.0.19")
     (source
      (origin
-       (method url-fetch)
-       (uri (string-append "https://github.com/ptrrkssn/pidentd/archive/"
-                           "v" version ".tar.gz"))
-       (file-name (string-append name "-" version ".tar.gz"))
+       (method git-fetch)
+       (uri (git-reference
+              (url "https://github.com/ptrrkssn/pidentd")
+              (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
        (sha256
         (base32
-         "0y3kd1bkydqkpc1qdff24yswysamsqivvadjy0468qri5730izgc"))))
+         "1k4rr0b4ygxssbnsykzjvz4hjhazzz4j5arlilyc1iq7b1wzsk7i"))))
     (build-system gnu-build-system)
     (arguments
      `(#:tests? #f)) ; No tests are included
@@ -2052,7 +2053,7 @@ (define-public pidentd
     (home-page "https://www.lysator.liu.se/~pen/pidentd/")
     (synopsis "Small Ident Daemon")
     (description
-     "@dfn{Pidentd} (Peter's Ident Daemon) is a identd, which implements a
+     "@dfn{Pidentd} (Peter's Ident Daemon) is an identd, which implements a
 identification server.  Pidentd looks up specific TCP/IP connections and
 returns the user name and other information about the connection.")
     (license license:public-domain)))