gpg-agent/pinentry: How to verify calling application

[Hartmut Knaack]

Hi,
on my machine running Linux and a recent KDE/Plasma, pinentry-qt
occasionally starts right after logging in and asks for my passphrase.
Is there any way to track down, which process asks gpg-agent for my private
key? Preferably, I would like pinentry to inform, which process actually is
the source of the key request.
Thanks

Hartmut
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