Use single vs escaped double quotes

src/rebar_git_resource.erl

@@ -32,10 +32,11 @@ lock_(AppDir, {git, Url}) ->
     {ok, VsnString} =
         case os:type() of
             {win32, _} ->
-                rebar_utils:sh("git --git-dir=\"" ++ Dir ++ "/.git\" --work-tree=\"" ++ Dir ++ "\" rev-parse --verify HEAD",
+                rebar_utils:sh("git --git-dir='" ++ Dir ++ "/.git'
+                               --work-tree='" ++ Dir ++ "' rev-parse --verify HEAD",
                     [{use_stdout, false}, {debug_abort_on_error, AbortMsg}]);
             _ ->
-                rebar_utils:sh("git --git-dir=\";" ++ Dir ++ "/.git\" rev-parse --verify HEAD",
+                rebar_utils:sh("git --git-dir=';" ++ Dir ++ "/.git' rev-parse --verify HEAD",
                     [{use_stdout, false}, {debug_abort_on_error, AbortMsg}])
         end,
     Ref = rebar_string:trim(VsnString, both, "\n"),