Hmm ... It's impossible ;-) This RPM doesn't exist on any FTP server

Provides :
libdnf5-devel
libdnf5-devel(x86-32)
pkgconfig(libdnf5)

Requires :

/usr/bin/pkg-config
libdnf5(x86-32) = 5.2.8.1-5.fc42
libdnf5.so.2
libsolv-devel(x86-32) >= 0.7.30
pkgconfig(fmt)
pkgconfig(librepo)
pkgconfig(libsolv)
pkgconfig(libsolvext)
pkgconfig(libxml-2.0)
pkgconfig(modulemd-2.0)
pkgconfig(rpm)
pkgconfig(sqlite3)
rpmlib(CompressedFileNames) <= 3.0.4-1
rpmlib(FileDigests) <= 4.6.0-1
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
rpmlib(PayloadIsZstd) <= 5.4.18-1

Content of RPM :
/usr/include/libdnf5
/usr/include/libdnf5/advisory
/usr/include/libdnf5/advisory/advisory.hpp
/usr/include/libdnf5/advisory/advisory_collection.hpp
/usr/include/libdnf5/advisory/advisory_module.hpp
/usr/include/libdnf5/advisory/advisory_package.hpp
/usr/include/libdnf5/advisory/advisory_query.hpp
/usr/include/libdnf5/advisory/advisory_reference.hpp
/usr/include/libdnf5/advisory/advisory_set.hpp
/usr/include/libdnf5/advisory/advisory_set_iterator.hpp
/usr/include/libdnf5/base
/usr/include/libdnf5/base/base.hpp
/usr/include/libdnf5/base/base_weak.hpp
/usr/include/libdnf5/base/goal.hpp
/usr/include/libdnf5/base/goal_elements.hpp
/usr/include/libdnf5/base/log_event.hpp
/usr/include/libdnf5/base/solver_problems.hpp
/usr/include/libdnf5/base/transaction.hpp
/usr/include/libdnf5/base/transaction_environment.hpp
/usr/include/libdnf5/base/transaction_group.hpp
/usr/include/libdnf5/base/transaction_module.hpp
/usr/include/libdnf5/base/transaction_package.hpp
/usr/include/libdnf5/common
/usr/include/libdnf5/common/exception.hpp
/usr/include/libdnf5/common/impl_ptr.hpp
/usr/include/libdnf5/common/preserve_order_map.hpp
/usr/include/libdnf5/common/proc.hpp
/usr/include/libdnf5/common/sack
/usr/include/libdnf5/common/sack/exclude_flags.hpp
/usr/include/libdnf5/common/sack/match_int64.hpp
There is 118 files more in these RPM.