git automatic remove corrupt objects?

is there an automatic way to remove these objects and references so that `git cvsimport` can download them again?

error: object file .git/objects/70/6b24a605053372de06756e7e655b950361fdff is empty
error: unable to find 706b24a605053372de06756e7e655b950361fdff
error: object file .git/objects/70/6b24a605053372de06756e7e655b950361fdff is empty
fatal: loose object 706b24a605053372de06756e7e655b950361fdff (stored in .git/objects/70/6b24a605053372de06756e7e655b950361fdff) is corrupt