my $new_rewrite_map = edit_rewrite_map($org_rewrite_map);
push @updates, [ 'refs/dgit-rewrite/map',
($org_rewrite_map // '0'x40),
my $new_rewrite_map = edit_rewrite_map($org_rewrite_map);
push @updates, [ 'refs/dgit-rewrite/map',
($org_rewrite_map // '0'x40),