Fix mirror mode

Change-Id: Ica0e8392562a7ae5aad7e45441c1540e5e2b0238
diff --git a/manifest_xml.py b/manifest_xml.py
index d3156e5..ea6a7e5 100644
--- a/manifest_xml.py
+++ b/manifest_xml.py
@@ -432,7 +432,7 @@
     if name is None:
       s = m_url.rindex('/') + 1
       manifestUrl = self.manifestProject.config.GetString('remote.origin.url')
-      remote = _XmlRemote('origin', m_url[:s], manifestUrl)
+      remote = _XmlRemote('origin', fetch=m_url[:s], manifestUrl=manifestUrl)
       name = m_url[s:]
 
     if name.endswith('.git'):