I think it comes from these lines in systemd.spec %post section
%if %{with systemgrps}
getent group wheel && setfacl -Rnm g:wheel:rx,d:g:wheel:rx
%{_localstatedir}/log/journal/ > /dev/null 2>&1 || :
getent group adm && setfacl -Rnm g:adm:rx,d:g:adm:rx
%{_localstatedir}/log/journal/ > /dev/null 2>&1 || :
%endif