Git submodule head ‘reference is not a tree’ error

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I have a project with a submodule that is pointing to an invalid commit: the submodule commit remained local and when I try to fetch it from another repo I get:

$ git submodule update
fatal: reference is not a tree: 2d7cfbd09fc96c04c4c41148d44ed7778add6b43
Unable to checkout '2d7cfbd09fc96c04c4c41148d44ed7778add6b43' in submodule path 'mysubmodule'

I know what the submodule HEAD should be, is there any way I can change this locally, without pushing from the repo that does have commit 2d7cfbd09fc96c04c4c41148d44ed7778add6b43 ?

I’m not sure if I’m being clear… here’s a similar situation I found.

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