Drush make SVN repository
The following will do a svn export (unless you provide the --working-copy flag to drush) into DRUPAL_ROOT/profiles/contrib/myprofile

Drush make old-style syntax:

projects[myprofile][type] = profile
projects[myprofile][download][type] = svn
projects[myprofile][download][url] = svn+ssh://example.com/svn/path/to/subdirectory/of/myprofile
; This would place the checkout into /profiles/contrib/myprofile
projects[myprofile][subdir] = "contrib"


Drush make YAML syntax:

projects:
    myprofile:
        type: "profile"
        download:
            type: svn
            url: "svn+ssh://example.com/svn/path/to/subdirectory/of/myprofile"
        subdir: "contrib"


The drush make documentation is now located at http://www.drush.org/en/master/make.