diff --git a/Python/sysmodule.c b/Python/sysmodule.c
index f85cc55..c688172 100644
--- a/Python/sysmodule.c
+++ b/Python/sysmodule.c
@@ -1065,8 +1065,6 @@
 /* end of sys_doc */ ;
 
 /* Subversion branch and revision management */
-static const char _patchlevel_revision[] = PY_PATCHLEVEL_REVISION;
-static const char headurl[] = "$HeadURL$";
 static int svn_initialized;
 static char patchlevel_revision[50]; /* Just the number */
 static char branch[50];
@@ -1076,64 +1074,14 @@
 static void
 svnversion_init(void)
 {
-    const char *python, *br_start, *br_end, *br_end2, *svnversion;
-    Py_ssize_t len;
-    int istag = 0;
-
     if (svn_initialized)
         return;
 
-    python = strstr(headurl, "/python/");
-    if (!python) {
-        strcpy(branch, "unknown branch");
-        strcpy(shortbranch, "unknown");
-    }
-    else {
-        br_start = python + 8;
-        br_end = strchr(br_start, '/');
-        assert(br_end);
-
-        /* Works even for trunk,
-           as we are in trunk/Python/sysmodule.c */
-        br_end2 = strchr(br_end+1, '/');
-
-        istag = strncmp(br_start, "tags", 4) == 0;
-        if (strncmp(br_start, "trunk", 5) == 0) {
-            strcpy(branch, "trunk");
-            strcpy(shortbranch, "trunk");
-        }
-        else if (istag || strncmp(br_start, "branches", 8) == 0) {
-            len = br_end2 - br_start;
-            strncpy(branch, br_start, len);
-            branch[len] = '\0';
-
-            len = br_end2 - (br_end + 1);
-            strncpy(shortbranch, br_end + 1, len);
-            shortbranch[len] = '\0';
-        }
-        else {
-            Py_FatalError("bad HeadURL");
-            return;
-        }
-    }
-
-
-    svnversion = _Py_svnversion();
-    if (strcmp(svnversion, "Unversioned directory") != 0 && strcmp(svnversion, "exported") != 0)
-        svn_revision = svnversion;
-    else if (istag) {
-        len = strlen(_patchlevel_revision);
-        assert(len >= 13);
-        assert(len < (sizeof(patchlevel_revision) + 13));
-        strncpy(patchlevel_revision, _patchlevel_revision + 11,
-            len - 13);
-        patchlevel_revision[len - 13] = '\0';
-        svn_revision = patchlevel_revision;
-    }
-    else
-        svn_revision = "";
-
     svn_initialized = 1;
+    *patchlevel_revision = '\0';
+    strcpy(branch, "");
+    strcpy(shortbranch, "unknown");
+    svn_revision = "";
 }
 
 /* Return svnversion output if available.