$ git clone -n https://src.fedoraproject.org/rpms/ceres-solver.git /var/lib/mock/f31-build-56701-28243/root/chroot_tmpdir/scmroot/ceres-solver
Cloning into '/var/lib/mock/f31-build-56701-28243/root/chroot_tmpdir/scmroot/ceres-solver'...
$ git reset --hard 7c1b69446f1d27128a57ed851f07839489f95d01
HEAD is now at 7c1b694 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild