Earlier quoted context omitted.
I don't know. Sevastopol is super important to them. I hope they won't do anything drastic. It's the only warm water port Russia has on the black sea. And thus full year access to the mediterranean. I doubt they will give it up. Perhaps the rest of Crimea, I could imagine. But not the base.
https://en.wikipedia.org/wiki/Novorossiysk would like to have a word with you. "Novorossiysk is the biggest Russian seaport. In 2019 cargo turnover amounted to 142,5m tons[26] In 2021 cargo turnover amounted to 105,2m tons[27] Novorossiysk is connected by rail and highways to the main industrial and population centres of Russia, Transcaucasia, and Central Asia. "
Their main port in the black sea is still Sevastopol though. It would cost a lot to transfer all that over to Novorossiysk and it would also cause them to lose a lot of face. I doubt they will let that happen.