No. It does nothing to hinder ICE's work. It does nothing to promote a culture of not helping or tolerating torturers.
Not from US and dont know the topic in depth, but I like this idea that instead of not engaging with your government, you earn their money and actively help / fund action to reverse its course. After all that is or should be how is works in a democratic country.
Isn't that clearly better than just forcing ICE to install Gitlab?