Guile head should not have version from release tarball

guile-head-version.diff

diff --git a/GUILE-VERSION b/GUILE-VERSION
index a44c254fb..0db8a3b45 100644
--- a/GUILE-VERSION
+++ b/GUILE-VERSION
@@ -1,8 +1,8 @@
 # -*-shell-script-*-
 
 # Note: `GUILE_VERSION' is defined in `configure.ac' using `git-version-gen'.
-GUILE_MAJOR_VERSION=2
-GUILE_MINOR_VERSION=3
+GUILE_MAJOR_VERSION=3
+GUILE_MINOR_VERSION=0
 GUILE_MICRO_VERSION=0
 
 GUILE_EFFECTIVE_VERSION=3.0
diff --git a/configure.ac b/configure.ac
index 374b4297a..23d2c9b9f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -29,7 +29,7 @@ Floor, Boston, MA 02110-1301, USA.
 AC_PREREQ(2.61)
 
 AC_INIT([GNU Guile],
-        m4_esyscmd([build-aux/git-version-gen --match  v2.\[12\].\* .tarball-version]),
+        m4_esyscmd([cat GUILE-VERSION | head -n 6 | tr "\n" ' ' | sed 's/^\([^.]*\.\)*\ //' | sed 's/[^0-9 ]*//g' | sed 's/ $//' | sed 's/ /./g' | tr -d '\n']),
         [bug-guile@gnu.org])
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_MACRO_DIR([m4])