my @checks = (
 [ qw/0 agency_id agency_id / ],
 [ qw/1 advertiser advertiser / ],
 [ qw/2 compaign_id compaign_id / ],
 [ qw/3 contact_id admin_contact_id / ],
 [ qw/3 contact_id tech_contact_id / ],
);
foreach my $check (@checks){
    my( $idx, $key, $k ) = @$check;

    (defined $result_ref->{$k} && $result_ref->{$k} != 0)
        && get_updates($objects[$idx], $key, $result_ref->{$k});
}
[download]

Note that means that $result_ref->{$k} is allowed to be the empty string. If it's not, then it's better written as a simple check for boolean truth.

    $result_ref->{$k}
        && get_updates($objects[$idx], $key, $result_ref->{$k});
[download]

In Perl6, that could look like:

my @checks = qw(
    0 agency_id agency_id
    1 advertiser advertiser
    2 compaign_id compaign_id
    3 contact_id admin_contact_id
    3 contact_id tech_contact_id
);

for (@checks) -> ($idx, $key, $check) {
    $result_ref->{$check} &&
        get_updates( @objects[$idx], $key, $result_ref->{$check} );
}
[download]