fetching from ostree repos sometimes fails with a gpg error

Summary

fetching from ostree repos sometimes fails with a gpg error (Too many open files)

Steps to reproduce

I have been unable to reproduce this locally, but it happens consistently in the gitlab CI of gnome-build-meta when trying to fetch dependencies/base-sdk-images.bst from the bootstrap project of freedesktop-sdk. (despite my attempts to upgrade gnupg/gpgme).

What is the current bug behavior?

the fetch fails with the following error: "GPG: Unable to complete signature verification: GPGME: Too many open files"

What is the expected correct behavior?

the fetch succeeds

Relevant logs and/or screenshots

https://gitlab.gnome.org/GNOME/gnome-build-meta/-/jobs/72861

https://gitlab.gnome.org/GNOME/gnome-build-meta/-/jobs/72764

https://gitlab.gnome.org/GNOME/gnome-build-meta/-/jobs/72101

https://gitlab.gnome.org/GNOME/gnome-build-meta/-/jobs/72084

Possible fixes

No idea.

Other relevant information

A workaround for this is to bst fetch a small number of elements (including the ostree repo) before running the full pipeline.

Edited by Abderrahim Kitouni