Based on the tags listed here:
I would look here
On 02/12/2012 10:39 PM, Maki Watanabe wrote:
How to find the right commit SHA for specific cassandra release?
For example, how to checkout 0.8.9 release on git repository?
With git log --grep=0.8.9, I found the latest commit mentioned about 0.8.9 was
Author: Sylvain Lebresne <firstname.lastname@example.org>
Date: Sun Dec 11 00:02:14 2011 +0000
prepare for release 0.8.9
However I don't think it's a reliable way. I've also checked
CHANGES.txt and NEW.txt but thoese say nothing on commit SHA.