@lool_lauris I downloaded hh_clamor_repartition.zip and inspected its shell scripts. They are very simple if you are familiar with Linux system administration. Just usage of "dd", "parted" and "make_ext4fs" utils. Looking at current partitioning I figured out that my Nexus was affected by hh_repartition_32GB.sh script and to rollback the changes I just need to run the hh_stock_32GB.sh and that is it.
Also before that for safety I did backup of crypto and grow partitions to my laptop because those scripts do that too.