Second, I did apply the script manually but it made no alterations to sqSCCSVersion.h in my case (it was already localized to my machine). So it may not be necessary to run it, but it does no harm.
The behavior with regard to `sqSCCSVersion.h` shouldn't change at all. More importantly, running the script manually also copies and, in our case, updates the script in the repository's `hooks` directory (see [here](https://github.com/j4yk/opensmalltalk-vm/blob/623dee2b6589723173af8b10d73485...)) to configure Git for our needs. This change is within the `.git` directory and therefore doesn't alter your local copy, the OpenSmalltalkVM code base.