I tried to write to support with a question about changing the name of item. I was sent such an answer
As for the GraphQL API, all the information you need to make a request can be found in our documentation here. If you need additional help, I’d recommend checking out one of our quickstart guides. I recently posted these on our developer community here.
So, I have link to graphqls documentation and a link to post on comunity, there is no answer to this question. This means that I still do not know how to change the name of the item.