Error: rsync exited with code 12

I was using this package before a Windows update and it was working great, but since the update, the rsync task is failing. I can still run grunt/rsync successfully from Cygwin so I am not sure what the issue is. Please let me know if any ideas, I would like to continue using this package.

Start by reproducing the failing rsync task after the Windows update and compare it with the successful grunt/rsync command in Cygwin. The issue provides no file or test entry point; the work is done when the cause of exit code 12 is identified and the package task works again or the limitation is documented.

Written by the indexing model from the issue text.