git fails over IPv6 with code.googlesource.com

[James Hartig <fastest963 () gmail com>]

We've been having an issue pulling code from code.googlesource.com since
last week over IPv6. If I disable IPv6 everything works fine. Same thing
happens with go.googlesource.com. Example:

git clone https://code.googlesource.com/google-api-go-client
Cloning into 'google-api-go-client'...
fatal: unable to access 'https://code.googlesource.com/google-api-go-client/':
I/O operation timed out

Can someone from Google reach out off-list? Thanks!