owncloud/core — pull request #9038 by danimo (2014-06-14 15:46:14+00:00)
Title: Add .tag file to make tar balls tracable

The "git archive" operation will substitute the contents of this file with the
hash sum of the commit that this tar ball is based on. This improves
tracebility and allows to retrospectively set tags. It has proven to be a
valuable asset in mirall.