[Version] Keep local commit id as it somehow help with debugging (#697)

* [Enhancement] Disable cache and append git commit ID to version in tilelang (#688)

* Disabled caching in quickstart example for improved performance.
* Added a function to retrieve the current git commit ID and appended it to the version string if not already present, enhancing version tracking and debugging capabilities.

* revert quickstart

tilelang/version.py

@@ -24,5 +24,24 @@ else:
 with open(version_file_path, "r") as version_file:
     __version__ = version_file.read().strip()
 
+
+def get_git_commit_id() -> Union[str, None]:
+    """Get the current git commit hash by running git in the current file's directory."""
+    try:
+        return subprocess.check_output(['git', 'rev-parse', 'HEAD'],
+                                       cwd=os.path.dirname(os.path.abspath(__file__)),
+                                       stderr=subprocess.DEVNULL,
+                                       encoding='utf-8').strip()
+    except subprocess.SubprocessError:
+        return None
+
+
+# Append git commit hash to version if not already present
+# NOTE(lei): Although the local commit id cannot capture locally staged changes,
+# the local commit id can help mitigate issues caused by incorrect cache to some extent,
+# so it should still be kept.
+if "+" not in __version__ and (commit_id := get_git_commit_id()):
+    __version__ = f"{__version__}+{commit_id}"
+
 # Define the public API for the module
 __all__ = ["__version__"]