In answer to this question on stackechange, I wrote
gitdates.py (available from github). If it is called from a directory that is under
git resivion control, it lists all the files there with the short
hashtag and the date from when they were last committed.
The current version is written for python version 3 and uses git.
verbruik|2d80861|2012-10-08 19:06:33 +0200 mkindexpic|8d92934|2012-08-31 21:21:38 +0200 www-sync|bdf9956|2012-10-14 21:37:43 +0200 mkphotopage|8d92934|2012-08-31 21:21:38 +0200 softwareinfo.py|a4b6319|2012-10-28 17:00:24 +0100 mksmall|8d92934|2012-08-31 21:21:38 +0200