I found I cannot "git pull" chromium code.

When I git pull chromium.googlesource.com, it does not work.
$ git pull --rebase
fatal: unable to access 'https://chromium.googlesource.com/chromium/src.git/': The requested URL returned error: 400

So do 'https://chromium.googlesource.com/chromium/tools/build.git/'.
$ git pull --rebase
fatal: unable to access 'https://chromium.googlesource.com/chromium/tools/build.git/': The requested URL returned error: 400

I also found I could not clone the repository due to the same error.
$ git clone https://chromium.googlesource.com/chromium/tools/build.git
Cloning into 'build'...
fatal: unable to access 'https://chromium.googlesource.com/chromium/tools/build.git/': The requested URL returned error: 400