I am not entirely sure but I think in all cases you can just get a new reference via your typeglob-syntax.
Consider this:
use strict;
use Scalar::Util qw(weaken isweak);
my $a = 1;
my $r1 = *main::a{SCALAR};
my $r2 = *main::a{SCALAR};
weaken $r1;
print "r1 is weak\n" if isweak $r1;
print "r2 is weak\n" if isweak $r2;
Here I get two copies of the typeglob. Both are references to $a but they are different one as proved by weakening one and observing that the other one has not been weakened.
So I guess you don't need the special snytax for array-refs, hash-refs etc, you just generically get a new copy of whatever is in the corresponding slot of the typeglob.
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