What purpose does the random char on the GitHub query string serve?

[savagedev]

I see a randomChar being added to the GitHub query string, what purpose does this serve?

[ezeoleaf]

So, when using the search API from Github, if you search by a topic or language, you always get the same 1000 repositories (the best ranked for example).
If we add a randomChar to our call to the searchAPI we add even more randomness. Otherwise we were always picking a repository from the same 1000. Now, if randomChar is send to the searchAPI, we get a whole different set of 1000 repositories.
It was added to improve randomness and the publishing of repositories with not so many stars.

Does this make sense?