gnu: guile-dbd-sqlite3: Replace 'url-fetch' by 'git-fetch'.

Fixes https://debbugs.gnu.org/25913.

* gnu/packages/guile-xyz.scm (guile-dbi)[source]: Replace 'url-fetch'
by'git-fetch'.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu/packages/guile-xyz.scm

@@ -1512,13 +1512,14 @@ It currently supports MySQL, Postgres and SQLite3.")
     (name "guile-dbd-sqlite3")
     (version "2.1.6")
     (source (origin
-              (method url-fetch)
-              (uri (string-append
-                    "http://download.gna.org/guile-dbi/guile-dbd-sqlite3-"
-                    version ".tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://example.org") ;only hosted on Software Heritage
+                    (commit "0758c615e9e85ad76d153d5dc6179881f1f50089")))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "0rg71jchxd2y8x496s8zmfmikr5g8zxi8zv2ar3f7a23pph92iw2"))))
+                "1rwf3z6ib6nkhfnk2nw8p6fqirdx2pparcrlmsm0i2ii62plpqhb"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("pkg-config" ,pkg-config)
@@ -1527,6 +1528,8 @@ It currently supports MySQL, Postgres and SQLite3.")
      `(("sqlite" ,sqlite)
        ("zlib" ,(@ (gnu packages compression) zlib))))
     (synopsis "Guile DBI driver for SQLite")
+    ;; Unofficial home-page.
+    ;; Added by b9cbfa52f71505de8447fefabd97f16d0a9cbde6 (2016-06)
     (home-page "https://github.com/jkalbhenn/guile-dbd-sqlite3")
     (description
      "guile-dbi is a library for Guile that provides a convenient interface to