Can a bot intercept url parameters?

Question

Bots

Hello!
Is it possible to do this:
1) There is a website site-1.ru
2) Each partner has its own referral link of the form
site-1.ru/ref=id partners, a client came and clicked on the link to go to the bot
4) The bot automatically remembered that the client came via the link site-1.ru/ref=12345
5) The bot interacts with the client for some time and then gives him a link, for example site-2. ru/ef=12345
In other words, the bot intercepts the partner's ID (in this example, id=12345), remembers it, and then can substitute this ID for any url