Man pages matching name debian::pkgperl::patch in section 3pm:

Debian::PkgPerl::Patch.3pm.en	debian 10 / pkg-perl-tools
Debian::PkgPerl::Patch.3pm.en	debian 11 / pkg-perl-tools
Debian::PkgPerl::Patch.3pm.en	debian 12 / pkg-perl-tools