Unchanged Submodules always stay in the Unstaged area and cannot discard them

[Zhao2Xiang]

Hello,

There are 2 submodules under our project repo.

They will be cloned locally when the project is first compiled.

I didn't change anything in them, while they always stay in the Sourcetree Unstaged area which made me troubling.

When I try to discard them, Sourcetree tell me the submodules didn't be initialized, and then tell me "Completed Successfully", but the submodules still stay in the Unstaged area.

I can make sure that I didn't change anything of the submodules.

I also tried some git submodule init command, they are all useless.

What should I do so that the submodules can be discarded from Unstaged area?

Thank you.

Best Regards,

Xiang, Zhao