Using clonable field as param in pre_get_posts filter

Hi,

i want to using value in my custom field, there is in multiple nested clonable group, as a param in pre_get_post filter for custom search on the frontend.

For example i have multiple nested group in my custom post type and one field hold color information – this value i want to check in search result using pre_get_posts filter. Hope, you understood me.

Can you show me a way for accomplish this issue pls?