Connect to Different Schema in Changelog?

Hello,

I am trying to deploy changes into a different schema than the schema that the changes are on (current schema is read-only, so I would not be able to write anything)

I was told to use this parameter:
–liquibase-schema-name=<other_schema_name>

Problem is, I don’t have access to the liquibase.properties file and cannot make changes in the CLI. I am using Oracle and only have access to the changelog (XML) and .sql files. Any help would be greatly appreciated!

I looked at this page, but it’s not helping me any: