$ git clone -n https://src.fedoraproject.org/rpms/flex.git /var/lib/mock/f31-build-51112-27480/root/chroot_tmpdir/scmroot/flex
Cloning into '/var/lib/mock/f31-build-51112-27480/root/chroot_tmpdir/scmroot/flex'...
$ git reset --hard f8de7fa8f1b1d8297bb57a565872d1b6f2130867
HEAD is now at f8de7fa - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild