[Bug 2328] cygwin rsync hangs when initiated remotely after transfering some files

[Jim Kleckner]

My belief is that rsync over ssh is tickling a deadlock
race condition in cygwin.

See this message and trace it backwards for more context:
  http://cygwin.com/ml/cygwin-patches/2005-q1/msg00015.html

I have recently re-volunteered to the author to help out getting his
patches tested but have heard nothing yet.

If this is the cause, then it is deep in cygwin.

Note that one possible workaround is to "push" from the
Windows system rather than to "pull" it from another system.
Not always possible.