rm -rf .git/modules/interesting_modules

delete the lines containing “[submodule “interesting_modules”] url=”http://something/”

update .gitmodules

run “git submodule sync”

run “git submodule init”

run “git submodule update” - at this point, a new checkout should happen.

new checkout will fail about a version mismatch. This is expected - the version of the submodule stored in the super-project is mismatched. “git status” should also show you “modified” in the submodule directory.

“cd interesting_submodule”

“git reset —hard HEAD”

enjoy !