Getting Portfolio team members loged work

[Igor DeFaye]

We need to obtain the amount of time spent by each team member of a portfolio team.

Because of the size of the product and the numerous teams, some work (mostly defects) get started by a team and ends up in another team, so we can't filter only on the portfolio team. We need to get it for each of team member regardless of the portfolio the issue is currently assigned.

Basically, looking a JQL like this:

sprint in openSprints() and worklogAuthor IN membersOf("[PortfolioTeamName]")

But membersOf only works for groups, not portfolio team. Any ideas how to get this working ?