How to add daily tags for a central repo?

Hi,

We currently host our projects on a central server. For the daily build purpose, I currently using a script to do the following steps:

  1. clone the project from the central server

  2. find the target commit for a specified date
      commit=`git log origin/master -n1 --format=%H --until="${timespec}
00:00:00"`

  3. tag the commit
      git tag -f daily/${timespec} ${commit}

  4. push the tag up to the central server

This usually works fine and allows us to tag earlier commit with past dates

However, it depends on the "COMMIT DATE", which is a local time to the developer who committed the changes. And if some developer didn't have the time or date configured correctly on his machine, the changes committed by him may not be included in a tag, even it is pushed to the on a date earlier than the target date to tag.

Alternatively, we can queue the job to do the following steps "on a target date":

1. clone the project from the central server
2. tag the "latest commit"
3. push the tag to the server

But I'd like to know better ways to do the daily tag things?

Roy