'telegram bot file_id (Bad Request: wrong file_id or the file is temporarily unavailable)

I have this old update

[
    {
        "update_id": 701193441,
        "channel_post": {
            "message_id": 286,
            "chat": {
                "id": -1001502877609
            },
            "date": 1648754113,
            "text": null,
            "photo": null,
            "caption": null,
            "media_group_id": null,
            "video": {
                "duration": 31,
                "width": 464,
                "height": 848,
                "file_name": null,
                "mime_type": "video/mp4",
                "thumb": {
                    "file_id": "AAMCAgADHQJZlBepAAIBHmJF_cGI-Cei0vWfPjGn6_ufrnzjAAJQHwACO14YSrd19WRW-FX4AQAHbQADIwQ",
                    "file_unique_id": "AQADUB8AAjteGEpy",
                    "file_size": 15528,
                    "width": 175,
                    "height": 320
                },
                "file_id": "BAACAgIAAx0CWZQXqQACAR5iRf3BiPgnotL1nz4xp-v7n6584wACUB8AAjteGEq3dfVkVvhV-CME",
                "file_unique_id": "AgADUB8AAjteGEo",
                "file_size": 4480287
            },
            "animation": null,
            "document": null
        },
        "edited_channel_post": null,
        "message": null,
        "edited_message": null
    }
]

this post still exists, around month left, but when I try to call getFile method I get Bad Request: wrong file_id or the file is temporarily unavailable error.
I wrote to @BotSupport but they didn't answer
How can I get this file via bot without editing post?
It worked for me, but after month it doesn't. Seems like telegram changes file_id but how to get new I can't find

telegram


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