Use os.environ.copy() instead of dict()

Signed-off-by: Shawn O. Pearce <sop@google.com>
(cherry picked from commit 3218c13205694434edb2375ab8a8515554eed366)

1 files changed, 1 insertions, 1 deletions

diff --git a/git_command.py b/git_command.py
index 4aeacd57..513b9ebf 100644
--- a/git_command.py
+++ b/git_command.py
@@ -127,7 +127,7 @@ class GitCommand(object):
                ssh_proxy = False,
                cwd = None,
                gitdir = None):
-    env = dict(os.environ)
+    env = os.environ.copy()
 
     for e in [REPO_TRACE,
               GIT_DIR,