You have a citation for your interpretation of "rent-a-cop"? I am intrigued but cannot find any use of the phrase other than something to the effect of "wannabe cop". Even the 1987 movie by that name is a former cop who works private security (fair warning I have never heard of the movie until reading the wiki summary a few minutes ago).
I have had unlimitee private repos on GitHub for over three years (job perm) and have made use of them twice ever. One for my vimwiki and the other was created and then touched.
Hopefully others will be like me and simply opt to not use it.