--- a/src/eric7/Plugins/VcsPlugins/vcsGit/GitDiffGenerator.py	Mon Dec 12 19:50:37 2022 +0100
+++ b/src/eric7/Plugins/VcsPlugins/vcsGit/GitDiffGenerator.py	Tue Dec 13 14:03:13 2022 +0100
@@ -8,8 +8,6 @@
 process.
 """
 
-import os
-
 from PyQt6.QtCore import QObject, QProcess, QTimer, pyqtSignal
 
 from eric7 import Preferences
@@ -142,11 +140,9 @@
                 args.append(stashName)
 
         # find the root of the repo
-        repodir = dname
-        while not os.path.isdir(os.path.join(repodir, self.vcs.adminDir)):
-            repodir = os.path.dirname(repodir)
-            if os.path.splitdrive(repodir)[1] == os.sep:
-                return False
+        repodir = self.vcs.findRepoRoot(dname)
+        if not repodir:
+            return False
 
         self.__process.kill()
         self.__process.setWorkingDirectory(repodir)