1 files changed, 4 insertions, 7 deletions
diff --git a/lib/spack/spack/fetch_strategy.py b/lib/spack/spack/fetch_strategy.py
index bafd99f885..dd7ebd248b 100644
--- a/lib/spack/spack/fetch_strategy.py
+++ b/lib/spack/spack/fetch_strategy.py
@@ -26,6 +26,7 @@ import sys
 import re
 import shutil
 import copy
+import xml.etree.ElementTree
 from functools import wraps
 from six import string_types, with_metaclass
 
@@ -771,13 +772,9 @@ class SvnFetchStrategy(VCSFetchStrategy):
         return self.revision
 
     def get_source_id(self):
-        output = self.svn('info', self.url, output=str)
-        if not output:
-            return None
-        lines = output.split('\n')
-        for line in lines:
-            if line.startswith('Revision:'):
-                return line.split()[-1]
+        output = self.svn('info', '--xml', self.url, output=str)
+        info = xml.etree.ElementTree.fromstring(output)
+        return info.find('entry/commit').get('revision')
 
     @_needs_stage
     def fetch(self):