Try without shallow clone if fatal error

    $ git --version
    git version 1.7.12.4

    $ git clone https://code.google.com/p/closure-library -b master --progress . --depth 1
    Cloning into '.'...
    fatal: expected shallow/unshallow, got Error: internal server error
Merge pull request #805 from tschaub/shallow-failure

Try without shallow clone if fatal error