The installation files are available in a nice bundled package - but I’d really recommend just using git to manage your installation files. I’d even say it’s simpler.
You’ve already used git I would think because you’re on an RC, but you might have uses svn, I don’t know… If you’ve used git to get the RC you have, all you need to do is navigate to your fogproject directory, wherever you put it.
If you have no idea where that is, you can find it like this:
find / | grep /fogproject/bin/installfog.sh
That command translates to english as:
Find all files, start the search in the base directory - pipe the output to grep, and only display output that has the path /fogproject/bin/instalfog.sh somewhere in it.
That should give you where the fogproject directory is. Just cd to there and run git pull and then when that’s done, run git checkout master and then cd into the bin directory and launch the installer with ./installfog.sh -y
If the find command doesn’t return anything, you’re best just following the wiki article and pull down a fresh copy of the fog repository. More details here:
https://wiki.fogproject.org/wiki/index.php?title=Upgrade_to_trunk
You can also Google search “switching git branches” and “update git repository” to get a wealth of information.