I think you can bypass duplicate check with DMLOptions.DuplicateRuleHeader Class: documentation
Sample:
Database.DMLOptions dml = new Database.DMLOptions();
dml.DuplicateRuleHeader.AllowSave = true;
Account duplicateAccount = new Account(Name='dupe');
Database.SaveResult sr = Database.insert(duplicateAccount, dml);
if (sr.isSuccess()) {
System.debug('Duplicate account has been inserted in Salesforce!');
}