If life was only that simple. Yours is only the simplest case.

Suppose we have a variable $x:

{ 
    package Foo::Bar::Baz;
    our $x = 123;
}
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What is the simplest generic way to get a reference \$x from that package?

$ns = 'Foo::Bar::Baz::';
$ref = \${ $::{$ns}{x} };
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will not work.

You'd have to follow the chain, like this:

$ns = 'Foo::Bar::Baz';
my $stash = \%::;
foreach(split '::', $ns) {
    $stash = $stash->{"$_\::"};
}

$ref = \${ $stash->{x} };
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Or you could use a module like Data::Diver.

All that, just to avoid the use of a symbolic reference:

{
    no strict 'refs';
    $ref = \${ "Foo::Bar::Baz::x" };
}
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Really.

You're going across town through the sewers, just to avoid a few traffic lights.