PROBLEM:

Cgit provides HTML pages for each commit in a repository, e.g. 
http://cgit.freedesktop.org/libreoffice/core/commit/?id=e12d566

Each page includes a row of links:
summary refs log  tree commit diff

Some of these links reference the given commit id, e.g.
  commit: http://cgit.freedesktop.org/libreoffice/core/commit/?id=e12d566
  refs:   http://cgit.freedesktop.org/libreoffice/core/refs/?id=e12d566

But summary and log do not:
  summary: http://cgit.freedesktop.org/libreoffice/core/
  log:     http://cgit.freedesktop.org/libreoffice/core/log/

I think summary is probably fine as-is, but you get a useful log with context pertaining to the commit if you add the id param to the log url:
  log:     http://cgit.freedesktop.org/libreoffice/core/log/?id=e12d566

I think that the contextual log is a more useful link to list on individual commit pages.

(I'm not sure if this is a bug, or an enhancement request)