diff --git a/bin/sde-update-tree b/bin/sde-update-tree
new file mode 100755
index 0000000..d4d3a3e
--- /dev/null
+++ b/bin/sde-update-tree
@@ -0,0 +1,74 @@
+#!/bin/sh
+# --- SDE-COPYRIGHT-NOTE-BEGIN ---
+# This copyright note is auto-generated by ./scripts/Create-CopyPatch.
+# 
+# Filename: bin/sde-update-tree
+# Copyright (C) 2007 The OpenSDE Project
+# 
+# More information can be found in the files COPYING and README.
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License. A copy of the
+# GNU General Public License can be found in the file COPYING.
+# --- SDE-COPYRIGHT-NOTE-END ---
+
+[ -n "$SDEROOT" ] ||
+	export SDEROOT=$( cd "${0%/*}/.."; pwd -P )
+
+. $SDEROOT/lib/libsde.in
+
+update_usage() {
+	local progname=${0##*/}
+	cat <<EOT
+Usage:	$progname [FILES...]
+EOT
+}
+
+shortopts=''
+longopts=''
+options=$( getopt -o "$shortopts" -l "$longopts" -- "$@" )
+if [ $? -ne 0 ]; then
+	list_usage
+	exit -1
+fi
+
+# load new arguments list
+eval set -- "$options"
+
+GITSERVER=git://git.opensde.net
+
+while [ $# -gt 0 ]; do
+	case "$1" in
+
+		--)	shift; break ;;
+		*)	echo_abort 1 "Unknown argument '$1', aborting."
+	esac
+	shift
+done
+
+# jump to the working tree's root
+#
+cd "$SDEROOT"
+
+tree="${SDEROOT##*/}"
+# hunt for the roots of the sub-working trees
+#
+for x in . package package/* target/*; do
+	if [ ! -d "$x" ]; then
+		case "$x" in
+			package)
+				echo -n "$tree/$x: clonning..."
+				git clone --quiet "$GITSERVER/opensde/$x-nopast.git" "$x"
+				;;
+			*)
+				echo_warning "$tree/$x: missing"
+				;;
+		esac
+	elif [ -d "$x/.git" ]; then
+		cd "$x";
+		echo -n "$tree/$x: syncing..."
+		git fetch --quiet && git reset && git rebase origin
+		cd - > /dev/null
+	fi
+done