Man pages matching name cache::ref::clock::base in section 3pm:

Cache::Ref::CLOCK::Base.3pm.en	debian 10 / libcache-ref-perl
Cache::Ref::CLOCK::Base.3pm.en	debian 11 / libcache-ref-perl
Cache::Ref::CLOCK::Base.3pm.en	debian 12 / libcache-ref-perl