Improve commit message generation for deploy_sdk.

sky/tools/deploy_sdk.py

Index: sky/tools/deploy_sdk.py
diff --git a/sky/tools/deploy_sdk.py b/sky/tools/deploy_sdk.py
index c5b481c7d9bc001423504e4bfc074465db52f826..e4bf71adb95670e2c2060c8fc042238196ead9f7 100755
--- a/sky/tools/deploy_sdk.py
+++ b/sky/tools/deploy_sdk.py
@@ -204,11 +204,18 @@ def main():
 
     if should_commit:
         # Kinda a hack to make a prettier build dir for the commit:
-        rel_build_dir = os.path.join(os.path.split(build_dir)[-2:])
+        script_path = os.path.relpath(os.path.abspath(__file__), SRC_ROOT)
+        rel_build_dir = os.path.relpath(build_dir, SRC_ROOT)
+        revision = git_revision()
+        commit_url = "https://github.com/domokit/mojo/commit/%s" % revision
+        pattern = """Autogenerated from %s
+Using %s and build output from %s.
+"""
+        commit_message = pattern % (commit_url, script_path, rel_build_dir)
         subprocess.check_call(['git', 'add', '.'], cwd=sdk_root)
         subprocess.check_call([
             'git', 'commit',
-            '-m', '%s from %s' % (rel_build_dir, git_revision())
+            '-m', commit_message
             ], cwd=sdk_root)
 
     time_delta = datetime.now() - start_time