my ($tip,$breakwater) = walk $old;
update_head $old, $tip, 'launder';
# no tree changes except debian/patches
- runcmd @git, qw(rm --quiet -rf debian/patches);
+ runcmd @git, qw(rm --quiet --ignore-unmatch -rf debian/patches);
printf "# breakwater tip\n%s\n", $breakwater;
}