$ git clone -n https://src.fedoraproject.org/rpms/undbx.git /var/lib/mock/f31-build-70617-30514/root/chroot_tmpdir/scmroot/undbx
Cloning into '/var/lib/mock/f31-build-70617-30514/root/chroot_tmpdir/scmroot/undbx'...
$ git reset --hard f6b426c0d032ac4da5dfea49f0c13dff8a798c3b
HEAD is now at f6b426c - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild