Man pages matching name fchownat in section 2:

fchownat.2.de	debian 10 / manpages-de-dev
fchownat.2.en	debian 10 / manpages-dev
fchownat.2.ja	debian 10 / manpages-ja-dev
fchownat.2.pl	debian 10 / manpages-pl-dev
fchownat.2.de	debian 11 / manpages-de-dev
fchownat.2.en	debian 11 / manpages-dev
fchownat.2.fr	debian 11 / manpages-fr-dev
fchownat.2.ja	debian 11 / manpages-ja-dev
fchownat.2.de	debian 12 / manpages-de-dev
fchownat.2.en	debian 12 / manpages-dev
fchownat.2.fr	debian 12 / manpages-fr-dev
fchownat.2.ja	debian 12 / manpages-ja-dev
fchownat.2.ru	debian 12 / manpages-ru-dev