The real worry about Google showing SHA-1 encryption is crackable, as pointed out by Peter Gutmann, a cryptography expert at the at the University of Auckland, New Zealand, is "with long-term document signing and certificates". But, what about the distributed version control system Git code repositories? Linus Torvalds, Linux and Git's inventor, doesn't see any real security headaches ahead for you.
Torvalds and other Linux kernel developers created Git in 2005 as Linux's distributed version control system. It's also used by multiple major companies including Facebook, Google, and Twitter, to manage their code-bases. Git is also used in GitHub, the world's most popular source code-management site. Even Microsoft uses GitHub. Indeed, Microsoft has more open-source developers than any other company on GitHub.