Hash collisions

It's hard for me to see how my few sentence comment could possibly considered as "all the theoretical arguing that you have been doing." My point was not that I know of any way of generating dangerous collisions, or that I am losing a single second of sleep over the security of my GIT repositories, but rather that I found the argument "It would be quite a task to generate a hash collision that also compiles as valid C code" weak. The current collision generating attacks I'm aware of (not specifically talking about SHA1) don't require generating a new file from scratch, but rather inserting random-looking data into a padding section of a file format. It doesn't seem a huge step from there to inserting "steganographered" random data. But even restricting to the simplest case of random-looking data at the end of the file, one out of every 65536 random-looking data blocks ends with '*/'... Anyways, I'm not an academic or even amateur cryptographer, and have no intention of becoming such, so while I try to avoid talking total nonsense, if you find posts based on general considerations offensive, please feel free to ignore what I write.