* Fix initial commit page
Unfortunately as a result of properly fixing ParsePatch the hack that
used git show <initial_commit_id> to get the diff for this failed.
This PR fixes this using the "super-secret" empty tree ref to make the
diff against.
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Also fix#13248
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Update services/gitdiff/gitdiff.go
Co-authored-by: 6543 <6543@obermui.de>