$ git clone -n https://src.fedoraproject.org/rpms/compat-flex.git /var/lib/mock/f31-build-57427-28341/root/chroot_tmpdir/scmroot/compat-flex
Cloning into '/var/lib/mock/f31-build-57427-28341/root/chroot_tmpdir/scmroot/compat-flex'...
$ git reset --hard be192195b8bd12b7d63683b10aa1391d66f435a3
HEAD is now at be19219 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild