Unless I'm missing something, all reset does is undef a gang of variables at once. All that the OPs snippet does is assigns the nothing string to scalars, and the empty set to arrays, so I guess it'd be

foreach(keys %globals){
   if( ref $globals{$_} eq 'ARRAY' ){
       @{ $globals{$_} } = ();
   } else {
       $globals{$_} = '';
   }
}
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