diff --git a/poky/meta/lib/oe/reproducible.py b/poky/meta/lib/oe/reproducible.py
index f4f58dd..421bb12 100644
--- a/poky/meta/lib/oe/reproducible.py
+++ b/poky/meta/lib/oe/reproducible.py
@@ -56,13 +56,13 @@
 
     # Check that the repository has a valid HEAD; it may not if subdir is used
     # in SRC_URI
-    p = subprocess.run(['git', 'rev-parse', 'HEAD'], stdout=subprocess.PIPE, stderr=subprocess.STDOUT, cwd=gitpath)
+    p = subprocess.run(['git', '--git-dir', gitpath, 'rev-parse', 'HEAD'], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
     if p.returncode != 0:
         bb.debug(1, "%s does not have a valid HEAD: %s" % (gitpath, p.stdout.decode('utf-8')))
         return None
 
     bb.debug(1, "git repository: %s" % gitpath)
-    p = subprocess.run(['git','log','-1','--pretty=%ct'], check=True, stdout=subprocess.PIPE, cwd=gitpath)
+    p = subprocess.run(['git', '--git-dir', gitpath, 'log', '-1', '--pretty=%ct'], check=True, stdout=subprocess.PIPE)
     return int(p.stdout.decode('utf-8'))
 
 def get_source_date_epoch_from_youngest_file(d, sourcedir):