1 files changed, 16 insertions, 1 deletions
diff --git a/lib/git/utils.py b/lib/git/utils.py
index c2140ba0..656e783c 100644
--- a/lib/git/utils.py
+++ b/lib/git/utils.py
@@ -1,5 +1,20 @@
+import os
+
 def dashify(string):
     return string.replace('_', '-')
 
 def touch(filename):
-    open(filename, "a").close()
+    os.utime(filename)
+
+def is_git_dir(d):
+    """ This is taken from the git setup.c:is_git_directory
+        function."""
+
+    if os.path.isdir(d) and \
+            os.path.isdir(os.path.join(d, 'objects')) and \
+            os.path.isdir(os.path.join(d, 'refs')):
+        headref = os.path.join(d, 'HEAD')
+        return os.path.isfile(headref) or \
+                (os.path.islink(headref) and
+                os.readlink(headref).startswith('refs'))
+    return False