I've received this patch https://lists.sr.ht/~tsdh/public-inbox/patches/25665 on my mailinglist. The Reply-To is set to the contributor's private mail address but the From header is set to
~jirutka <email@example.com> so when I "reply all"-ed this address was Cc-ed and bounced several days with
smtp; 454 4.7.1 <firstname.lastname@example.org>: Relay access denied: retry timeout exceeded.
I'm not sure where this address came from but Drew told me on IRC to file a bug because @git.sr.ht should be set up as a blackhole anyway.