$ git clone -n https://src.fedoraproject.org/rpms/cook.git /var/lib/mock/f31-build-66469-29880/root/chroot_tmpdir/scmroot/cook
Cloning into '/var/lib/mock/f31-build-66469-29880/root/chroot_tmpdir/scmroot/cook'...
$ git reset --hard 3a3db3e27017c656a8f4913ed4e8d819b7960b86
HEAD is now at 3a3db3e - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild