llvm.git mirror glitch

Dear All,

It looks like there was some glitch in llvm.git which looks like git
svn bug to me or something similar. It appeared as if in r225400 the
whole repo was wiped, but apparently it's not :slight_smile:

The repo is fixed as of now.

You may need to re-fetch from llvm.git.

Just for the record, sha for r225400 should be