Syntax:
RESET {SLAVE | REPLICA} [ALL] [channel_option]

channel_option:
    FOR CHANNEL channel

Makes the replica forget its position in the source's binary log. From
MySQL 8.0.22, RESET SLAVE is deprecated and the alias RESET REPLICA
should be used instead. In releases before MySQL 8.0.22, use RESET
SLAVE. The statement works in the same way as before, only the
terminology used for the statement and its output has changed. Both
versions of the statement update the same status variables when used.
Please see the documentation for RESET REPLICA for a description of the
statement.

URL: https://dev.mysql.com/doc/refman/8.0/en/reset-slave.html

