Help using .util.execute with git bash on windows

I have a

cd 'C:\Program Files\Inductive Automation\Ignition\data\projects\ziTagsImages'
git commit -a -m 'auto commit'

when I run it with gits bash at C:\Program Files\Git\bin\git.exe with

source 'C:/Program Files/Inductive Automation/Ignition/data/projects/TagsImages/'

it works

How can I get it to execute with the sys function?

cmd = 'source \'C:/Program Files/Inductive Automation/Ignition/data/projects/ziTagsImages/\''
system.util.execute(['C:\\Program Files\\Git\\bin\\git.exe',cmd])

doesn’t work or return anything…