Go is certainly not a rewrite of C. It looks like most/all of the go compiler have been/are being rewritten from C to Go, described at https://docs.google.com/document/d/1P3BLR31VA8cvLJLfMibSuTdw... . That looks to be machine-assisted, so I'm not sure how good an example it makes.
This "Go is a rewrite of C" misinformation that's been floating around lately is getting almost as bad as the "JavaScript is Scheme-like" nonsense that has gotten uncomfortably common.
Although incorrect and annoying, they are at least becoming a way to identify people who likely don't know what they're talking about.
Although incorrect and annoying, they are at least becoming a way to identify people who likely don't know what they're talking about.