my $msg = shift;
print(STDERR "Error: $msg\n") if $msg;
print STDERR <<END;
-Usage: ${\basename $0} # fetch/update GIT from CVS
+Usage: git cvsimport # fetch/update GIT from CVS
[-o branch-for-HEAD] [-h] [-v] [-d CVSROOT] [-A author-conv-file]
[-p opts-for-cvsps] [-P file] [-C GIT_repository] [-z fuzz] [-i] [-k]
[-u] [-s subst] [-a] [-m] [-M regex] [-S regex] [-L commitlimit]