$ git clone -n https://src.fedoraproject.org/rpms/ibm-plex-fonts.git /var/lib/mock/f45-build-13981-456/root/chroot_tmpdir/scmroot/ibm-plex-fonts
Cloning into '/var/lib/mock/f45-build-13981-456/root/chroot_tmpdir/scmroot/ibm-plex-fonts'...
$ git fetch origin 3cd0ff8d209e8055250b578bc2f6915837ee7d70:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ibm-plex-fonts
 * [new ref]         3cd0ff8d209e8055250b578bc2f6915837ee7d70 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3cd0ff8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild