$ git clone -n https://src.fedoraproject.org/rpms/gfs-olga-fonts.git /var/lib/mock/f45-build-9857-409/root/chroot_tmpdir/scmroot/gfs-olga-fonts
Cloning into '/var/lib/mock/f45-build-9857-409/root/chroot_tmpdir/scmroot/gfs-olga-fonts'...
$ git fetch origin ff65137ab259a1ee3856f4d85a5d5fafffbaa6b6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gfs-olga-fonts
 * [new ref]         ff65137ab259a1ee3856f4d85a5d5fafffbaa6b6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ff65137 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild