[Bug]: $GIT seems not to be used at all places where sources are updated at start

[allo-]

Is there an existing issue for this?

• I have searched the existing issues and checked the recent builds/commits

What happened?

When launching the webui offline, it hangs as it tries to update certain components. By setting GIT=/bin/true one can skip many of the updates but not all

Steps to reproduce the problem

1. Have no internet connection
2. launch GIT=/bin/true ./webui.sh
3. Installation of requirements is skipped (i.e. /bin/true pull ... is called), but it seems that git_clone calls are not skipped.

What should have happened?

All Places should use $GIT in python using os.environment

Version or Commit where the problem happens

68f336b

What Python version are you running on ?

Python 3.10.x

What platforms do you use to access the UI ?

Linux

What device are you running WebUI on?

Nvidia GPUs (RTX 20 above)

Cross attention optimization

xformers

What browsers do you use to access the UI ?

Mozilla Firefox

Command Line Arguments

--xformers --medvram

Console logs

...
################################################################
Launching launch.py...
################################################################
Using TCMalloc: libtcmalloc_minimal.so.4
Python 3.10.12 (main, Jun  7 2023, 10:09:46) [GCC 12.2.0]
Version: v1.5.1
Commit hash: 68f336bd994bed5442ad95bad6b6ad5564a5409a





Launching Web UI with arguments: --medvram --xformers

Additional information

Comment #1523 (comment) would probably be a workaround. Allowing git and pip to be replaced by /bin/true through environment variables would avoid the need to patch source code.

[catboxanon]

It should already be doing this for git.

stable-diffusion-webui/modules/launch_utils.py

Line 20 in 68f336b

git = os.environ.get('GIT', "git")

stable-diffusion-webui/webui.sh

Lines 50 to 54 in 68f336b

	# git executable
	if [[ -z "${GIT}" ]]
	then
	export GIT="git"
	fi

I'm not so sure about pip. Almost all calls to pip look to be done through the Python executable.