Git - Broken Links, Missing & Dangling Trees

Question

I was happily using Git - made some commits a couple of nights ago, which are reflected in the remote repo. Last night I opened up Smartgit Hg and it tells me there are missing

Answer 1

Try cloning the remote repository into a new folder.
Does it also have these errors? If not, simply use this clone and delete the corrupted one.

Any modified files that have not yet been committed can simple be copied to the new folder. Important: Don't copy the .git folder.