Alternatively, I propose:
Use a modified version of this simple old python script, that works:
https://github.com/eneroth/git-externals
This script would check out all svn:externals previously defined in subdirectory in a .gitexternals file
Problem is the checked out version is the HEAD, and are not part of the git repository
I would use a separate file, to use to store all svn versions. This file would be stored in git. So each time we do an update,
This file would be updated with the latest commited. An option in the script would allow to update this file to the latest version of externals.
The script would be modified to download the version stored in such file.
Branches and tags would have the version fixed for externals as well in this case.
For the historical data of the migration, not sure if this approach would work.
I would use this script in the case of submodules as well, it’s quite flexible. But in that case we will have all externals mirrored in git
git svn propset
does nothing in Git, it just sets SVN properties in the tracked SVN repository. You can use it to manage thesvn:externals
that the SVN repo trackes, but it will have no effect on the Git clone. – Pocket