is-fresh-txn-root is an attribute of the node in a transaction but it can leak
into revision files, e.g.
$ svnadmin create repo1
$ svn mkdir -mm file://`pwd`/repo1/A
$ svnadmin create repo2
$ svnadmin dump repo1 | svndumpfilter exclude A | svnadmin load repo2
$ grep is-fresh repo2/db/revs/*/*
repo2/db/revs/0/1:is-fresh-txn-root: y
It is also present in the main Apache repository:
http://colabti.org/irclogger/irclogger_log/svn-dev?date=2011-10-04#l116
This does not appear to cause any problems, but it is untidy.