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

Provides :
flatpak
flatpak(x86-64)

Requires :

libc.so.6()(64bit)
libc.so.6(GLIBC_2.6)(64bit)
libseccomp.so.2()(64bit)
libxml2.so.2(LIBXML2_2.4.30)(64bit)
libarchive.so.13()(64bit)
rtld(GNU_HASH)
libjson-glib-1.0.so.0()(64bit)
libgio-2.0.so.0()(64bit)
libgpgme-pthread.so.11()(64bit)
libgcc_s.so.1(GCC_3.3.1)(64bit)
libc.so.6(GLIBC_2.16)(64bit)
libXau.so.6()(64bit)
libgcc_s.so.1(GCC_3.0)(64bit)
rpmlib(PayloadIsXz) <= 5.2-1
libgpgme-pthread.so.11(GPGME_1.1)(64bit)
libgobject-2.0.so.0()(64bit)
libxml2.so.2(LIBXML2_2.6.0)(64bit)
libc.so.6(GLIBC_2.14)(64bit)
libc.so.6(GLIBC_2.2.5)(64bit)
libc.so.6(GLIBC_2.3.4)(64bit)
libpolkit-gobject-1.so.0()(64bit)
/bin/sh
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
libpthread.so.0(GLIBC_2.2.5)(64bit)
libpthread.so.0()(64bit)
libappstream-glib.so.8()(64bit)
libc.so.6(GLIBC_2.10)(64bit)
libc.so.6(GLIBC_2.8)(64bit)
rpmlib(CompressedFileNames) <= 3.0.4-1
rpmlib(FileDigests) <= 4.6.0-1
libxml2.so.2()(64bit)
flatpak-libs = 1.0.9-13.el7_9
libsoup-2.4.so.1()(64bit)
libc.so.6(GLIBC_2.7)(64bit)
libc.so.6(GLIBC_2.4)(64bit)
libc.so.6(GLIBC_2.15)(64bit)
xdg-desktop-portal > 0.10
libgdk_pixbuf-2.0.so.0()(64bit)
libglib-2.0.so.0()(64bit)
libc.so.6(GLIBC_2.3)(64bit)
libc.so.6(GLIBC_2.11)(64bit)
libgcc_s.so.1()(64bit)
libgpgme-pthread.so.11(GPGME_1.0)(64bit)
libcap.so.2()(64bit)
libc.so.6(GLIBC_2.9)(64bit)

Content of RPM :
/etc/dbus-1/system.d/org.freedesktop.Flatpak.SystemHelper.conf
/etc/flatpak/remotes.d
/etc/profile.d/flatpak.sh
/usr/bin/flatpak
/usr/lib/systemd/system/flatpak-system-helper.service
/usr/lib/systemd/user/dbus.service.d
/usr/lib/systemd/user/dbus.service.d/flatpak.conf
/usr/lib/systemd/user/flatpak-portal.service
/usr/lib/systemd/user/flatpak-session-helper.service
/usr/libexec/flatpak-bwrap
/usr/libexec/flatpak-dbus-proxy
/usr/libexec/flatpak-portal
/usr/libexec/flatpak-session-helper
/usr/libexec/flatpak-system-helper
/usr/share/bash-completion
/usr/share/bash-completion/completions
/usr/share/bash-completion/completions/flatpak
/usr/share/dbus-1/interfaces/org.freedesktop.Flatpak.xml
/usr/share/dbus-1/interfaces/org.freedesktop.portal.Flatpak.xml
/usr/share/dbus-1/services/org.freedesktop.Flatpak.service
/usr/share/dbus-1/services/org.freedesktop.portal.Flatpak.service
/usr/share/dbus-1/system-services/org.freedesktop.Flatpak.SystemHelper.service
/usr/share/doc/flatpak-1.0.9
/usr/share/doc/flatpak-1.0.9/NEWS
/usr/share/doc/flatpak-1.0.9/README.md
/usr/share/doc/flatpak-1.0.9/docbook.css
/usr/share/doc/flatpak-1.0.9/flatpak-docs.html
/usr/share/flatpak
/usr/share/flatpak/triggers
/usr/share/flatpak/triggers/desktop-database.trigger
There is 68 files more in these RPM.