REST Refresh Token

Hello

Recently I´d migrated my project from ver. 1.5.5 to 2.2.0. I was using several api calls to CRUD entities. Every hour the token expires and refresh token was used to… well, refresh the token… So I see that in this new version unless you authorize yourself with AUTHORIZATION_CODE you don´t get the refresh token. Do I get this right?
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If so… is there any alternative to get refresh token without user manual authentication (authorization_code)?
Thank you very much
Greetings