diff --git a/SOURCES/make-git-snapshot.sh b/SOURCES/make-git-snapshot.sh
index 64a5bec..888855e 100755
--- a/SOURCES/make-git-snapshot.sh
+++ b/SOURCES/make-git-snapshot.sh
@@ -1,31 +1,22 @@
 #!/bin/sh
 
-proto=$1
-branch=$2
+# Usage: ./make-git-snapshot.sh [COMMIT]
+#
+# to make a snapshot of the given tag/branch.  Defaults to HEAD.
+# Point env var REF to a local mesa repo to reduce clone time.
 
-if [ -z "$proto" ]; then
-    echo "Usage: $0 <proto name> [<branch>]"
-    exit 1
-fi
+DIRNAME=libdrm-$( date +%Y%m%d )
 
-dirname=$proto-$( date +%Y%m%d )
+echo REF ${REF:+--reference $REF}
+echo DIRNAME $DIRNAME
+echo HEAD ${1:-HEAD}
 
-rm -rf $dirname
-git clone git://git.freedesktop.org/git/xorg/proto/$proto $dirname
-cd $dirname
-if [ -z "$branch" ]; then
-    git log | head -1
-else
-    git checkout $branch
-fi
-sha=`git rev-list --max-count=1 --abbrev-commit HEAD`
-git repack -a -d
-cd ..
+rm -rf $DIRNAME
 
-# append sha to dirname
-mv $dirname $dirname-git$sha
-dirname=$dirname-git$sha
-tarball=$dirname.tar.bz2
-tar jcf $tarball $dirname
-rm -rf $dirname
-echo "$tarball is now available"
+git clone ${REF:+--reference $REF} \
+	git://git.freedesktop.org/git/mesa/drm $DIRNAME
+
+GIT_DIR=$DIRNAME/.git git archive --format=tar --prefix=$DIRNAME/ ${1:-HEAD} \
+	| bzip2 > $DIRNAME.tar.bz2
+
+# rm -rf $DIRNAME