How do I fix "trunk@45967' is out of date, it has been modified externally?

[Tom Kronmiller]

We have git/svn mapping installed.  When trying to push a local version of master to the central server the push was rejected,

% git push
Enumerating objects: 87, done.

[...]

Total 17 (delta 14), reused 0 (delta 0)
remote: error: 'trunk@45967' is out of date: it has been modified externally at r45973; retry the operation once again
remote:
remote: Fetching revisions from SVN repository:
remote: up to date
remote: Sending commits to SVN repository:
To http://githost:7990/scm/dp/d2s_sw.git
! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'http://twk@githost:7990/scm/dp/d2s_sw.git'

What does this error indicate, and how can we fix it?

Thanks.

[Tom Kronmiller · Accepted solution]

Makign and comitting a change in the svn trunk via svn seems to have fixed it, but I would still be curious to know what the error indicates happened so that we can avoid it in the future.

Thanks.