$ git clone -n https://src.fedoraproject.org/rpms/bison.git /var/lib/mock/f31-build-111604-34185/root/chroot_tmpdir/scmroot/bison
Cloning into '/var/lib/mock/f31-build-111604-34185/root/chroot_tmpdir/scmroot/bison'...
$ git reset --hard 905c8647c6bf2e3ee100e710116250dd67467ce5
HEAD is now at 905c864 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild