$ git clone -n https://src.fedoraproject.org/rpms/rit-sundar-fonts.git /var/lib/mock/f45-build-34563-688/root/chroot_tmpdir/scmroot/rit-sundar-fonts
Cloning into '/var/lib/mock/f45-build-34563-688/root/chroot_tmpdir/scmroot/rit-sundar-fonts'...
$ git fetch origin d2fc47a11a24eade439b247312c90ef675e2fb5a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rit-sundar-fonts
 * [new ref]         d2fc47a11a24eade439b247312c90ef675e2fb5a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d2fc47a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild