--- a/treepkg/git.py	Tue Jan 11 16:04:05 2011 +0000
+++ b/treepkg/git.py	Tue Jan 11 16:27:02 2011 +0000
@@ -128,7 +128,7 @@
 
     def last_changed_revision(self):
         """Returns the last changed rev of the working copy"""
-        return self.repository.last_changed_revision(self.localdir)
+        return self.get_revision()
 
     def list_tags(self, pattern):
         output = run.capture_output(cmdexpand("git tag -l $pattern",
@@ -144,6 +144,11 @@
                            % self.localdir)
         return output.strip()
 
+    def get_short_revision(self, refname="HEAD"):
+        """Return the short SHA1 sum of the latest commit"""
+        revision = self.get_revision(refname)
+        return revision[:7]
+
 class TagDetector:
 
     """Class to detect tags from a git repository