--- update.orig	2013-03-05 07:33:22.607071901 +0100
+++ update	2013-03-05 07:34:21.842235259 +0100
@@ -74,7 +74,9 @@
 			git cat-file tag $3 | sed -n '5,$p'
 			echo
 		fi
-		prev=$(git describe "$3^" | sed 's/-g.*//')
+		# format should be <version>-<# of commits>-<object name> (tagoh)
+		#prev=$(git describe "$3^" | sed 's/-g.*//')
+		prev=$(git describe "$3^" | sed 's/-[^-]*-g.*//')
 		# the first tag in a repo will yield no $prev
 		if [ -z "$prev" ]; then
 			echo "Changes since the dawn of time:"