git pull rejected for cygwin-htdocs

[Andrew Schulman]

> Yeah, the ssh key for 'sourceware accounts' (if you have a sourceware 
> username) and for cygwin@cygwin.com (for cygwin packaging repository 
> access via gitolite) are (currently) managed separately.
...
> Sorry, I can't make changes to sourceware accounts.
> 
> If you still have the old key, you can use the self-service methods here:
> 
> https://sourceware.org/sourceware/accountinfo.html
> 
> Otherwise, contact sourceware overseers using the address on that page.

Got it. Thanks Jon.