$ git clone -n https://src.fedoraproject.org/rpms/google-carlito-fonts.git /var/lib/mock/f45-build-12869-444/root/chroot_tmpdir/scmroot/google-carlito-fonts
Cloning into '/var/lib/mock/f45-build-12869-444/root/chroot_tmpdir/scmroot/google-carlito-fonts'...
$ git fetch origin 6b61e240e8604fe5c2d4f2f3f7ba15ff44fca5e5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/google-carlito-fonts
 * [new ref]         6b61e240e8604fe5c2d4f2f3f7ba15ff44fca5e5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b61e24 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild