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

Provides :
libchamplain-devel
libchamplain-devel(x86-64)
libchamplain-gtk-devel
pkgconfig(champlain-0.12)
pkgconfig(champlain-gtk-0.12)

Requires :

/usr/bin/pkg-config
libchamplain(x86-64) = 0.12.16-2.el8
libchamplain-0.12.so.0()(64bit)
libchamplain-gtk(x86-64) = 0.12.16-2.el8
libchamplain-gtk-0.12.so.0()(64bit)
pkgconfig(cairo)
pkgconfig(champlain-0.12)
pkgconfig(clutter-1.0)
pkgconfig(clutter-gtk-1.0)
pkgconfig(gdk-3.0)
pkgconfig(gio-2.0)
pkgconfig(glib-2.0)
pkgconfig(gobject-2.0)
pkgconfig(gtk+-3.0)
pkgconfig(libsoup-2.4)
pkgconfig(sqlite3)
rpmlib(CompressedFileNames) <= 3.0.4-1
rpmlib(FileDigests) <= 4.6.0-1
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
rpmlib(PayloadIsXz) <= 5.2-1

Content of RPM :
/usr/include/libchamplain-0.12
/usr/include/libchamplain-0.12/champlain
/usr/include/libchamplain-0.12/champlain/champlain-adjustment.h
/usr/include/libchamplain-0.12/champlain/champlain-bounding-box.h
/usr/include/libchamplain-0.12/champlain/champlain-coordinate.h
/usr/include/libchamplain-0.12/champlain/champlain-custom-marker.h
/usr/include/libchamplain-0.12/champlain/champlain-defines.h
/usr/include/libchamplain-0.12/champlain/champlain-enum-types.h
/usr/include/libchamplain-0.12/champlain/champlain-error-tile-renderer.h
/usr/include/libchamplain-0.12/champlain/champlain-exportable.h
/usr/include/libchamplain-0.12/champlain/champlain-features.h
/usr/include/libchamplain-0.12/champlain/champlain-file-cache.h
/usr/include/libchamplain-0.12/champlain/champlain-file-tile-source.h
/usr/include/libchamplain-0.12/champlain/champlain-image-renderer.h
/usr/include/libchamplain-0.12/champlain/champlain-kinetic-scroll-view.h
/usr/include/libchamplain-0.12/champlain/champlain-label.h
/usr/include/libchamplain-0.12/champlain/champlain-layer.h
/usr/include/libchamplain-0.12/champlain/champlain-license.h
/usr/include/libchamplain-0.12/champlain/champlain-location.h
/usr/include/libchamplain-0.12/champlain/champlain-map-source-chain.h
/usr/include/libchamplain-0.12/champlain/champlain-map-source-desc.h
/usr/include/libchamplain-0.12/champlain/champlain-map-source-factory.h
/usr/include/libchamplain-0.12/champlain/champlain-map-source.h
/usr/include/libchamplain-0.12/champlain/champlain-marker-layer.h
/usr/include/libchamplain-0.12/champlain/champlain-marker.h
/usr/include/libchamplain-0.12/champlain/champlain-marshal.h
/usr/include/libchamplain-0.12/champlain/champlain-memory-cache.h
/usr/include/libchamplain-0.12/champlain/champlain-network-bbox-tile-source.h
/usr/include/libchamplain-0.12/champlain/champlain-network-tile-source.h
/usr/include/libchamplain-0.12/champlain/champlain-null-tile-source.h
There is 105 files more in these RPM.