public static class OverwriteUtility
{
    [ThreadStatic]
    private static readonly ArrayBufferWriter<byte> buffer = new();

    public static void Overwrite<T>(in T from, ref T to)
    {
        buffer.Clear();
        MemoryPackSerializer.Serialize(buffer, from);
        MemoryPackSerializer.Deserialize(buffer.WrittenSpan, ref to);
    }
}

public static class OverwriteUtility
{
    [ThreadStatic]
    private static readonly ArrayBufferWriter<byte> buffer = new();

    public static void Overwrite<T>(in T from, ref T to)
    {
        buffer.Clear();
        MemoryPackSerializer.Serialize(buffer, from);
        MemoryPackSerializer.Deserialize(buffer.WrittenSpan, ref to);
    }
}