Merge pull request #1581 from EliahKagan/fixture-env

Unset other env vars related to `GIT_DIR` for fixtures

Author: Byron

tests/tools/src/lib.rs

@@ -600,6 +600,11 @@ fn configure_command<'a>(
         .stderr(std::process::Stdio::piped())
         .current_dir(script_result_directory)
         .env_remove("GIT_DIR")
+        .env_remove("GIT_INDEX_FILE")
+        .env_remove("GIT_OBJECT_DIRECTORY")
+        .env_remove("GIT_ALTERNATE_OBJECT_DIRECTORIES")
+        .env_remove("GIT_WORK_TREE")
+        .env_remove("GIT_COMMON_DIR")
         .env_remove("GIT_ASKPASS")
         .env_remove("SSH_ASKPASS")
         .env("MSYS", msys_for_git_bash_on_windows)