python3Packages.python-jsonpath: fix src fetching

pkgs/development/python-modules/python-jsonpath/default.nix

@@ -17,6 +17,13 @@ buildPythonPackage rec {
     repo = "python-jsonpath";
     tag = "v${version}";
     fetchSubmodules = true;
+    preFetch = ''
+      # can't clone using ssh
+      # https://github.com/jg-rp/python-jsonpath/pull/122
+      export GIT_CONFIG_COUNT=1
+      export GIT_CONFIG_KEY_0=url.https://github.com/.insteadOf
+      export GIT_CONFIG_VALUE_0=git@github.com:
+    '';
     hash = "sha256-DiXBIo/I36rrn+RCQda+khfViCnzHwiGzK2X9ACF3io=";
   };