The file /lib/systemd/system/pve-fake-subscription.timer.service is wrong and just a copy of /lib/systemd/system/pve-fake-subscription.timer
The other two systemd files have permissions that systemd doesn't like and it writes warning messages into the journal sometimes (for instance after systemctl daemon-reload):
Dec 13 10:51:58 pve systemd[1]: Configuration file /lib/systemd/system/pve-fake-subscription.timer is marked executable. Please remove executable permission bits. Proceeding anyway.
Dec 13 10:51:58 pve systemd[1]: Configuration file /lib/systemd/system/pve-fake-subscription.timer is marked world-writable. Please remove world writability permission bits. Proceeding anyway.
Dec 13 10:51:58 pve systemd[1]: Configuration file /lib/systemd/system/pve-fake-subscription.service is marked executable. Please remove executable permission bits. Proceeding anyway.
Dec 13 10:51:58 pve systemd[1]: Configuration file /lib/systemd/system/pve-fake-subscription.service is marked world-writable. Please remove world writability permission bits. Proceeding anyway.
/lib/systemd/system/pve-fake-subscription.timer.service
is wrong and just a copy of/lib/systemd/system/pve-fake-subscription.timer
systemctl daemon-reload
):