We always worry when a password reset needs to be done in our Dev environments when there is no email service installed.
Easiest way : Install n98 tool
wget https://files.magerun.net/n98-magerun2.phar chmod +x ./n98-magerun2.phar
php n98-magerun2.phar customer:change-password
In M2, there is a way to do this if you have access to the Database.
When the password reset link is clicked and the email has been submitted, there will be a value for the rp_token column in datatable customer_entity in M2 database.
The parameter passed as the "token" will be the above value.
The parameter passed as the "id" will be customer ID (entity_Id in cstomer_entity datatable).
You can use the following link with the proper parameter values to reset the password.