If I still want to apply changes immediately, I can use the rpm-ostree apply-live command which will apply changes without restarting the system (but some modifications may require a reboot to be fully effective).
Here's a simple in-memory writer that collects all written data:
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Раскрыты подробности о договорных матчах в российском футболе18:01
3. 重复步骤2直到堆大小为1