If you want to test Hoohash on a CPU, since GPU miner is not ready. You can use this following guide. And does mot require syncing for testing. Just remember that 5 first blocks after genesis are Pyrinhash and then Hoohash.

Install the testnet version of HTND:
git clone https://github.com/Hoosat-Oy/HTND.git
cd HTND
git switch -t origin/testnet
go install . ./cmd/...
Start the node and allow mining on top of genesis block.
~/go/bin/HTND --testnet --utxoindex --allow-submit-block-when-not-synced

Open another terminal window to create new cli wallet .
~/go/bin/htnwallet --testnet create
~/go/bin/htnwallet --testnet start-daemon &
Now another terminal window to create address for the miner.
~/go/bin/htnwallet --testnet new-address

Then open another teminal window to start CPU mining.
 
~/go/bin/htnminer --testnet --mine-when-not-synced --miningaddr=hoosattest:qpdhxq3exnz7ugunfg28n0vhft8vf8dhmkr02jd50fvrcksv3zpmcfe0nu8rx