$ git clone -n https://src.fedoraproject.org/rpms/google-roboto-slab-fonts.git /var/lib/mock/f45-build-13086-446/root/chroot_tmpdir/scmroot/google-roboto-slab-fonts
Cloning into '/var/lib/mock/f45-build-13086-446/root/chroot_tmpdir/scmroot/google-roboto-slab-fonts'...
$ git fetch origin a0fe63c93cd86960bf764b0c1d21291ac1aa9453:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/google-roboto-slab-fonts
 * [new ref]         a0fe63c93cd86960bf764b0c1d21291ac1aa9453 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a0fe63c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild