https://github.com/steeve/france.code-civil/commit/b805ecf05...
You can clearly see that the "commit/law" changes the wordings of various files to replace "mother and father" by "parents" and "husband and wife" by "spouses".
Did you look? All markdown files aside from the readme are articles. Or did you mean articles which were altered after their initial creation? https://github.com/steeve/france.code-civil/commits/master/L... is one, it was added in 1803 and modified in 1986 and 2014.
https://github.com/steeve/france.code-civil/commits/a191667d... is also one, with modifications in 1986, 1987, 2007 and 2013.
By that i mean if law x is changed to say "blah blah blah" that means that law Y no longer applies and law Z is changed to say "foo bar bobbins"
The code is not readonly at all, each law within the domain covered by the code is an alteration to the code. Individual laws are reified as commits, and the repository tracks the evolution of the code as laws get voted in and applied.