There's similar topic at
https://bitcointalk.org/index.php?topic=5169284.0 which should answer some of your question (even though it should be "Bitcoin source code" rather than "Bitcoin").
- are backups performed periodically? what / when / by whom
- are these backups held publicly (where) or only privately (by whom)
At very least, all bitcoin contributor/developer automatically make private backup when they run command such as
git clone or
git pull- what is the emergency assembly point (is btctalk/chan/bitmessage appropriate)
Probably IRC or public mailing which often used by Bitcoin Core developer/contributor