Error when updating RetroPie - Error running 'git pull' - returned 128

[marcel151]

Hello,

my setup:

Pi Model or other hardware: 3B+
Power Supply used: 5V 3A
RetroPie Version Used 4.4.2 (1c476df7)
Built From: Pre made SD Image on RetroPie website,
USB Devices connected: No
Controller used: Not relevant, SSH used for updating
Error messages received: see below
Log found in /home/pi/RetroPie-Setup/logs/rps_2018-08-17_210141.log
How to replicate the problem: The problem is always there when I'm updating RetroPie

I got the following error when updating my RetroPie via SSH using retropie_setup.sh (sorry for the few german errors, I think you get the idea, these are git-errors). I filtered the relevant lines and that you can see where they are.

= = = = = = = = = = = = = = = = = = = = =
Configuring 'retroarch' : RetroArch - frontend to the libretro emulator cores - required by all lr-* emulators
= = = = = = = = = = = = = = = = = = = = =

fatal: Kein Git-Repository (oder irgendein Elternverzeichnis): .git
fatal: Kein Git-Repository (oder irgendein Elternverzeichnis): .git
[...]
xmb/monochrome/png/core-options.png
Copying new default configuration to /opt/retropie/configs/all/retroarch.cfg.rp-dist
/home/pi/RetroPie-Setup/logs
Error running 'git pull' - returned 128
Error running 'git submodule update --init --recursive' - returned 128

= = = = = = = = = = = = = = = = = = = = =
Installing 'lr-atari800' : Atari 8-bit/800/5200 emulator - Atari800 port for libretro
= = = = = = = = = = = = = = = = = = = = =
[...]

What could this be?

Thank you!