diff --git a/meta/lib/oe/reproducible.py b/meta/lib/oe/reproducible.py
index a80376010a..6bb25da55a 100644
--- a/meta/lib/oe/reproducible.py
+++ b/meta/lib/oe/reproducible.py
@@ -82,6 +82,7 @@ def find_git_repositories(d, sourcedir):
         for root, dirs, files in os.walk(mainpath, topdown=True):
             if '.git' in dirs or '.git' in files:
                 git_repositories.append(root)
+                dirs[:] = []  # don't recurse into nested git repos (multiple SRC_URI destsuffix)
 
     if not git_repositories:
         bb.warn('Failed to find any git repositories in UNPACKDIR or S')
@@ -105,7 +106,10 @@ def get_source_date_epoch_from_git(d, sourcedir):
 
         bb.debug(1, "git repository: %s" % repo_path)
         p = subprocess.run(['git', '-C', repo_path, 'log', '-1', '--pretty=%ct'],
-                           check=True, stdout=subprocess.PIPE)
+                           check=False, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+        if p.returncode != 0:
+            bb.debug(1, "git log failed for %s (exit %d): %s" % (repo_path, p.returncode, p.stdout.decode('utf-8')))
+            continue
         source_dates.append(int(p.stdout.decode('utf-8')))
 
     if source_dates: