$ git clone -n https://src.fedoraproject.org/rpms/google-croscore-fonts.git /var/lib/mock/f45-build-12882-444/root/chroot_tmpdir/scmroot/google-croscore-fonts
Cloning into '/var/lib/mock/f45-build-12882-444/root/chroot_tmpdir/scmroot/google-croscore-fonts'...
$ git fetch origin 5c1160e56646dabdfbd04155e02501d119e7a7c8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/google-croscore-fonts
 * [new ref]         5c1160e56646dabdfbd04155e02501d119e7a7c8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5c1160e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild