@@ -1,3 +1,3 @@
-[submodule "gitdb"]
-	path = git/ext/gitdb
-	url = git://github.com/gitpython-developers/gitdb.git
+[submodule "gitdb"]
+	path = git/ext/gitdb
+	url = git://github.com/gitpython-developers/gitdb.git
@@ -49,7 +49,7 @@ def digest_process_messages(fh, progress):
 		if not char:
 			break
 
-		if char in ('\r', '\n'):
+		if char in ('\r', '\n') and line_so_far:
 			dropped_lines.extend(progress._parse_progress_line(line_so_far))
 			line_so_far = ''
 		else:
@@ -510,7 +510,7 @@ def _get_fetch_info_from_stderr(self, proc, progress):
 		fetch_head_info = fp.readlines()
 		fp.close()
 
-		assert len(fetch_info_lines) == len(fetch_head_info)
+		assert len(fetch_info_lines) == len(fetch_head_info), "len(%s) != len(%s)" % (fetch_head_info, fetch_info_lines)
 
 		output.extend(FetchInfo._from_line(self.repo, err_line, fetch_line) 
 						for err_line,fetch_line in zip(fetch_info_lines, fetch_head_info))
 
@@ -176,7 +176,18 @@ def _parse_progress_line(self, line):
 			elif op_name == 'Resolving deltas':
 				op_code |= self.RESOLVING
 			else:
-				raise ValueError("Operation name %r unknown" % op_name)
+				# Note: On windows it can happen that partial lines are sent
+				# Hence we get something like "CompreReceiving objects", which is 
+				# a blend of "Compressing objects" and "Receiving objects".
+				# This can't really be prevented, so we drop the line verbosely
+				# to make sure we get informed in case the process spits out new
+				# commands at some point.
+				self.line_dropped(sline)
+				sys.stderr.write("Operation name %r unknown - skipping line '%s'" % (op_name, sline))
+				# Note: Don't add this line to the failed lines, as we have to silently
+				# drop it
+				return failed_lines
+			# END handle op code
 
 			# figure out stage
 			if op_code not in self._seen_ops: