This issue occurs because of an expired personal access token(PAT) that is stored in secure store of eclipse. While staging, this expired PAT is used for authentication, which fails and leads to 401 error.This issue has been fixed with abapGIT ADT cl...
One case where this error usually occurs is when there is a dynpro called in the background while creation of a particular pulled object.In order to identify which object causes this issue and why this happened, you could create an incident on BC-CP-...