Global rename script is a script that performs local renames on wikis where the account of the steward or the global renamer is not registered. However if you intend to look for logs for those account, you can't search for them despite being shown in the recent changes. I think we should be able to look for logs for that account. Example on howiki:
- 16:09, 7 August 2016 Global rename script (talk | block) renamed user Beccaviola (0 edits) to FlyingMeeces (per request)
- https://ho.wikipedia.org/wiki/Special:Log/Global_rename_script --> "No matching items in log."