code: def get_last_modified_timestamp(self):
          
          cmd = "find . -print0 | xargs -0 stat -f '%T@ %p' | sort -n | tail -1 | cut -f2- -d' '"
          ps = subprocess.Popen(cmd,shell=True,stdout=subprocess.PIPE,stderr=subprocess.STDOUT)
          output = ps.communicate()[0]
          print output
docs: Looks at the files in a git root directory and grabs the last modified timestamp