Access repeater item value from outside

I tried to use $get('repeaterName') to access a repeater and gets below array:
array:1 [▼ // app/Filament/Resources/OrderResource.php:374
  "d014ab83-5d0f-4ecf-a585-4f9582ffe4d9" => array:2 [▼
    "addon_id" => "15"
    "quantity" => null
  ]
]

Is there a way to change the array key name to something simpler?
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