For reasons discussed in this thread: http://marc.info/?l=lyx-devel&m=149662457330174&w=2
I've altered the script that sends emails after git commits so that it does not include full commit logs when those exceed about 48K. I tested it with a commit to stable, and had previously tested it with various sized commits to my developer's repo. So I am reasonably confident it will work. Let's hope so. If you experience any problems, please let me know. Richard