diff --git a/jenkins/scripts/coverage/24966-work-around.diff b/jenkins/scripts/coverage/24966-work-around.diff
new file mode 100644
index 000000000..5c5df2201
--- /dev/null
+++ b/jenkins/scripts/coverage/24966-work-around.diff
@@ -0,0 +1,23 @@
+diff --git a/tools/gyp/pylib/gyp/generator/make.py b/tools/gyp/pylib/gyp/generator/make.py
+index e98d93a..bf08a5c 100644
+--- a/tools/gyp/pylib/gyp/generator/make.py
++++ b/tools/gyp/pylib/gyp/generator/make.py
+@@ -1758,8 +1758,15 @@ $(obj).$(TOOLSET)/$(TARGET)/%%.o: $(obj)/%%%s FORCE_DO_CMD
+       self.WriteLn('%s: %s' % (' '.join(outputs), intermediate))
+       self.WriteLn('\t%s' % '@:')
+       self.WriteLn('%s: %s' % ('.INTERMEDIATE', intermediate))
+-      self.WriteLn('%s: %s%s' %
+-                   (intermediate, ' '.join(inputs), force_append))
++      # Don't add `force_append` (FORCE_DO_CMD) to the intermediate sentinal.
++      # Adding it makes the action run alway, even when there are no changes.
++      # Excluding macOS which has a different way of resolving dependancies
++      # which can lead to deadlocks.
++      # (refack): AFAICT because `*.intermediate` files don't have build rules.
++      if self.flavor == 'mac':
++        self.WriteLn('%s: %s%s' % (intermediate, ' '.join(inputs), force_append))
++      else:
++        self.WriteLn('%s: %s' % (intermediate, ' '.join(inputs)))
+       actions.insert(0, '$(call do_cmd,touch)')
+
+     if actions:
+~