Commit ae1a7eefff may have broken git behind a firewall

https://github.com/git/git/commit/ae1a7eefff

may have broken git behind a firewall:

https://bugzilla.redhat.com/show_bug.cgi?id=2013288

I am behind a firewall and using gitproxy:

exec socat - socks4:proxy-server-name:$1:$2

I got

$ git clone git://gcc.gnu.org/git/gcc.git Cloning into 'gcc'... fetch-pack: unexpected disconnect while reading sideband packet fatal: early EOF fatal: fetch-pack: invalid index-pack output $

Both

$ git clone --depth 1 git://gcc.gnu.org/git/gcc.git

and

$ git clone https://gcc.gnu.org/git/gcc.git

work.

$ git -c protocol.version=1 clone git://gcc.gnu.org/git/gcc.git

also works.