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

Provides :
config(systemd-journal-gateway)
systemd-journal-gateway
systemd-journal-gateway(x86-64)

Requires :

libc.so.6()(64bit)
libgnutls.so.28(GNUTLS_3_1_0)(64bit)
systemd = 219-62.el7_6.6
librt.so.1(GLIBC_2.2.5)(64bit)
libgnutls.so.28()(64bit)
rtld(GNU_HASH)
librt.so.1()(64bit)
libgcc_s.so.1(GCC_3.3.1)(64bit)
libc.so.6(GLIBC_2.16)(64bit)
liblzma.so.5()(64bit)
libgcc_s.so.1(GCC_3.0)(64bit)
rpmlib(PayloadIsXz) <= 5.2-1
ld-linux-x86-64.so.2(GLIBC_2.3)(64bit)
/usr/bin/getent
libc.so.6(GLIBC_2.14)(64bit)
libc.so.6(GLIBC_2.2.5)(64bit)
libc.so.6(GLIBC_2.3.4)(64bit)
liblz4.so.1()(64bit)
/bin/sh
libgcrypt.so.11(GCRYPT_1.2)(64bit)
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
libpthread.so.0(GLIBC_2.2.5)(64bit)
libpthread.so.0()(64bit)
libc.so.6(GLIBC_2.3.2)(64bit)
libgnutls.so.28(GNUTLS_1_4)(64bit)
libcurl.so.4()(64bit)
libc.so.6(GLIBC_2.10)(64bit)
libc.so.6(GLIBC_2.8)(64bit)
rpmlib(FileDigests) <= 4.6.0-1
rpmlib(CompressedFileNames) <= 3.0.4-1
ld-linux-x86-64.so.2()(64bit)
libc.so.6(GLIBC_2.7)(64bit)
libc.so.6(GLIBC_2.4)(64bit)
libgcrypt.so.11()(64bit)
libselinux.so.1()(64bit)
liblzma.so.5(XZ_5.0)(64bit)
systemd
libc.so.6(GLIBC_2.3)(64bit)
libgcc_s.so.1()(64bit)
libcap.so.2()(64bit)
libmicrohttpd.so.10()(64bit)
config(systemd-journal-gateway) = 219-62.el7_6.6
libc.so.6(GLIBC_2.17)(64bit)
libc.so.6(GLIBC_2.9)(64bit)

Content of RPM :
/etc/systemd/journal-remote.conf
/etc/systemd/journal-upload.conf
/usr/lib/systemd/system/systemd-journal-gatewayd.service
/usr/lib/systemd/system/systemd-journal-gatewayd.socket
/usr/lib/systemd/system/systemd-journal-remote.service
/usr/lib/systemd/system/systemd-journal-remote.socket
/usr/lib/systemd/system/systemd-journal-upload.service
/usr/lib/systemd/systemd-journal-gatewayd
/usr/lib/systemd/systemd-journal-remote
/usr/lib/systemd/systemd-journal-upload
/usr/lib/tmpfiles.d/systemd-remote.conf
/usr/share/man/man8/systemd-journal-gatewayd.8.gz
/usr/share/man/man8/systemd-journal-gatewayd.service.8.gz
/usr/share/man/man8/systemd-journal-gatewayd.socket.8.gz
/usr/share/man/man8/systemd-journal-remote.8.gz
/usr/share/systemd/gatewayd
/usr/share/systemd/gatewayd/browse.html
/var/lib/systemd/journal-upload