For my "cygrun.exe" wrapper to work it should be behind shebang scripts in the PATH, so moved ~/usr/bin to the PATH end on Cygwin.
# -q be quiet
# -z6 enables compression level 6
cvs -q -z6
# -P prune empty directories
co -P
# -u provides unified diff
# -p print to standard output
diff -up
rdiff -up
# -P prune empty directories
get -P
# Do not print the list of tags for this file. Can be very useful when your
# site uses a lot of tags.
log -N
# -P prune empty directories
# -d create new directories
update -Pd