$ git clone -n https://src.fedoraproject.org/rpms/rit-tn-joy-fonts.git /var/lib/mock/f45-build-34568-688/root/chroot_tmpdir/scmroot/rit-tn-joy-fonts
Cloning into '/var/lib/mock/f45-build-34568-688/root/chroot_tmpdir/scmroot/rit-tn-joy-fonts'...
$ git fetch origin fd9c50a6d9c384db604b0c691304ee0f4dfe8e6d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rit-tn-joy-fonts
 * [new ref]         fd9c50a6d9c384db604b0c691304ee0f4dfe8e6d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fd9c50a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild