$ git clone -n https://src.fedoraproject.org/rpms/ibm-plex-fonts.git /var/lib/mock/f39-build-1701987-41212/root/chroot_tmpdir/scmroot/ibm-plex-fonts
Cloning into '/var/lib/mock/f39-build-1701987-41212/root/chroot_tmpdir/scmroot/ibm-plex-fonts'...
$ git fetch origin fa1cbc4f90e0c514824bdb2d6731ff8315b9b252:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ibm-plex-fonts
 * [new ref]         fa1cbc4f90e0c514824bdb2d6731ff8315b9b252 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fa1cbc4 Update to 6.3.0