deface Original hash changing after reload

I'm having a hard time getting the :original hash for my Deface overrides to work correctly. It appears that the hash changes with every reload!

For instance, I wanted to override the following <h1>:

https://github.com/spree/spree_auth_devise/blob/2-2-stable/lib/views/frontend/spree/users/edit.html.erb#L4

So I wrote the following override:

Deface::Override.new(
  name: "edit_account_replace_title",
  virtual_path: "spree/users/edit",
  replace: "h1",
  text: "<h2>Edit Account</h2>"
)

However, I keep getting Deface warnings about needing an original hash:

Deface: 1 overrides found for 'spree/users/edit'
Deface: 'edit_account_replace_title' matched 1 times with 'h1'
Deface: [WARNING] No :original defined for 'edit_account_replace_title', you should change its definition to include:
 :original => 'a133eade5c9cf2b42192fcc1c6f5472ff6c29312'

Reload...

Deface: 1 overrides found for 'spree/users/edit'
Deface: 'edit_account_replace_title' matched 1 times with 'h1'
Deface: [WARNING] No :original defined for 'edit_account_replace_title', you should change its definition to include:
 :original => '4e8af3b95c73312b6f5452dddf2dacd6f96c5daf'

Am I missing something and am simply doing this wrong? The line that I'm overriding isn't dynamic, so what might be causing the hash to change like this?