Change to a git repo before checking git-svn version

gclient

 #!/bin/bash
 # Copyright (c) 2009 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # This script will try to sync the bootstrap directories and then defer control.
 
 base_dir=$(dirname "$0")
 
 # Test git and git --version.
@@ skipping 24 matching lines @@
   if ((GITD[0] < 1 || (GITD[0] == 1 && GITD[1] < 6) )); then
     echo "git version is ${GITV}, please update to a version later than 1.6"
     exit 1
   fi
 }
 
 
 # Update git checkouts prior the cygwin check, we don't want to use msysgit.
 if [ "X$DEPOT_TOOLS_UPDATE" != "X0" -a -e "$base_dir/.git" ]
 then
-  # Skip this call since it fails outside a git checkout.
-  #test_git_svn
-  (cd "$base_dir"; git svn rebase -q -q)
+  cd $base_dir
+  test_git_svn
+  git svn rebase -q -q
+  cd - > /dev/null
 fi
 
 if [ "X$DEPOT_TOOLS_UPDATE" != "X0" -a -e "$base_dir/git-cl-repo/.git" ]
 then
   test_git
   (cd "$base_dir/git-cl-repo"; git pull -q)
 fi
 
 # Use the batch file as an entry point if on cygwin.
 if [ "${OSTYPE}" = "cygwin" -a "${TERM}" != "xterm" ]; then
    ${base_dir}/gclient.bat "$@"
    exit
 fi
 
 
 # We're on POSIX (not cygwin). We can now safely look for svn checkout.
 if [ "X$DEPOT_TOOLS_UPDATE" != "X0" -a -e "$base_dir/.svn" ]
 then
   # Update the bootstrap directory to stay up-to-date with the latest
   # depot_tools.
   svn -q up "$base_dir"
 fi
 
 exec python "$base_dir/gclient.py" "$@"