double playbook causes two runs

https://salsa.debian.org/debconf-video-team/ansible/-/blob/master/roles/pxe/tftp-server/files/scripts/ansible-up#L53

PLAYBOOKS="$PLAYBOOKS $INVSITE"

results in:

ansible-playbook ... /root/playbook-repo/site.yml /root/inventory-repo/site.yml

If the two repos are really the same, then it runs all the roles/tasks twice.

Which somehow muck up /etc/nftables.conf (the 2nd run reverts back to the original.. I don't get it. removing inventory-repo/site.yml fixed it.