Man pages matching name pmdafetch in section 3:

pmdaFetch.3.en	debian 10 / libpcp-pmda3-dev
pmdafetch.3.en	debian 10 / libpcp-pmda3-dev
pmdaFetch.3.en	debian 11 / libpcp-pmda3-dev
pmdaFetch.3.en	debian 12 / libpcp-pmda3-dev