[Qemu-discuss] from git source build instructions still correct?

[Dennis Luehring]

using git version 2.14.1 under ubuntu 17.10

howto from https://www.qemu.org/download/#source

1. git clone git://git.qemu.org/qemu.git
2. cd qemu
3. git submodule init
4. git submodule update --recursive

1. git clone git://git.qemu.org/qemu.git

gives:
Cloning into 'qemu'...
fatal: read error: Connection reset by peer

using:

git clone https://github.com/qemu/qemu.git

works

2. git submodule init

works

Submodule 'dtc' (git://git.qemu-project.org/dtc.git) registered for path 
'dtc'
Submodule 'roms/QemuMacDrivers' (git://git.qemu.org/QemuMacDrivers.git) 
registered for path 'roms/QemuMacDrivers'
Submodule 'roms/SLOF' (git://git.qemu-project.org/SLOF.git) registered 
for path 'roms/SLOF'
Submodule 'roms/ipxe' (git://git.qemu-project.org/ipxe.git) registered 
for path 'roms/ipxe'
...

but

3. git submodule update --recursive

gives many warning likes:

Cloning into '/home/test/qemu/qemu/dtc'...
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
fatal: clone of 'git://git.qemu-project.org/dtc.git' into submodule path 
'/home/test/qemu/qemu/dtc' failed
Failed to clone 'dtc'. Retry scheduled
Cloning into '/home/test/qemu/qemu/roms/QemuMacDrivers'...
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
fatal: clone of 'git://git.qemu.org/QemuMacDrivers.git' into submodule 
path '/home/test/qemu/qemu/roms/QemuMacDrivers' failed
Failed to clone 'roms/QemuMacDrivers'. Retry scheduled
Cloning into '/home/test/qemu/qemu/roms/SLOF'...
fatal: Could not read from remote repository.

...

referering to different repo places like git://git.qemu-project.org and 
git://git.qemu.org

so
git://git.qemu.org/qemu.git is not accessible

https://github.com/qemu/qemu.git works

but referes partialy to git://git.qemu-project.org or git://git.qemu.org 
for submodules

question: should the howto work out of the box and what repo to use?