'git show 00000000' will always fail. Should not be passed to git.

When selecting 'Tools->Git->Blame', I can also click the '00000000' pseudo-sha of changes that are local. In that case the user gets a:

18:43 Executing: git show --no-color 00000000
fatal: ambiguous argument '00000000': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions

...and Creator stays in the 'Waiting for data...' state.

Maybe, the 00000000 should not be clickable or simply be ignored when clicked.