explicitly check if we are inside a git repo (fixes #24)

livesync/folder.py

@@ -60,12 +60,15 @@ def _get_ignores(self) -> List[str]:
     def get_summary(self) -> str:
         summary = f'{self.source_path} --> {self.target}\n'
         try:
+            cmd = ['git', 'rev-parse', '--is-inside-work-tree']
+            subprocess.run(cmd, check=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        except subprocess.CalledProcessError:
+            pass  # not a git repo, git is not installed, or something else
+        else:
             cmd = ['git', 'log', '--pretty=format:[%h]\n', '-n', '1']
             summary += subprocess.check_output(cmd, cwd=self.source_path).decode()
             cmd = ['git', 'status', '--short', '--branch']
             summary += subprocess.check_output(cmd, cwd=self.source_path).decode().strip() + '\n'
-        except Exception:
-            pass  # not a git repo, git is not installed, or something else
         return summary
 
     async def watch(self) -> None: