To do this you have to add custom JS to ACF, use the ACF JS API to get the value of the field, and then you have to do your own AJAX request to get the values of the other fields.
I do not have a working example. This example does not work with the new ACF JS API https://github.com/Hube2/acf-dynamic-ajax-select-example/tree/master/dynamic-fields-on-relationship but it does something similar. It loads other fields based on a relationship field.
This one has a working example of doing an AJAX request based on a select field change https://github.com/Hube2/acf-dynamic-ajax-select-example/tree/master/dynamic-select-example.
When working with repeaters you must target the row where the updated field was changed.
