my $msg = shift;
        print(STDERR "Error: $msg\n") if $msg;
        print STDERR <<END;
-Usage: git cvsimport     # fetch/update GIT from CVS
+usage: git cvsimport     # fetch/update GIT from CVS
        [-o branch-for-HEAD] [-h] [-v] [-d CVSROOT] [-A author-conv-file]
        [-p opts-for-cvsps] [-P file] [-C GIT_repository] [-z fuzz] [-i] [-k]
        [-u] [-s subst] [-a] [-m] [-M regex] [-S regex] [-L commitlimit]
        my ($d) = @_;
        m#(\d{2,4})/(\d\d)/(\d\d)\s(\d\d):(\d\d)(?::(\d\d))?#
                or die "Unparseable date: $d\n";
-       my $y=$1; $y-=1900 if $y>1900;
+       my $y=$1;
+       $y+=100 if $y<70;
+       $y+=1900 if $y<1000;
        return timegm($6||0,$5,$4,$3,$2-1,$y);
 }
 
 
 sub get_headref ($) {
        my $name = shift;
+       $name =~ s/'/'\\''/g;
        my $r = `git rev-parse --verify '$name' 2>/dev/null`;
        return undef unless $? == 0;
        chomp $r;
                # (See check_refname_component in refs.c.)
                1 while $xtag =~ s/
                        (?: \.\.        # Tag cannot contain '..'.
-                       |   \@{         # Tag cannot contain '@{'.
+                       |   \@\{        # Tag cannot contain '@{'.
                        | ^ -           # Tag cannot begin with '-'.
                        |   \.lock $    # Tag cannot end with '.lock'.
                        | ^ \.          # Tag cannot begin...
                die "Fast-forward update failed: $?\n" if $?;
        }
        else {
-               system(qw(git merge cvsimport HEAD), "$remote/$opt_o");
+               system(qw(git merge -m cvsimport), "$remote/$opt_o");
                die "Could not merge $opt_o into the current branch.\n" if $?;
        }
 } else {