* Fix stat chunks searching
- Fixes a issue whereby the given chunk of issueIDs wasn't respected and
thus the returned results where not the correct results.
* Add tests
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: zeripath <art27@cantab.net>
- This will only allow `GetDeletedBranchByID` to return deletedBranch
which are on the repo, and thus don't return a deletedBranch from
another repo.
- This just should prevent possible bugs in the futher when a code is
passing the wrong ID into this function.