Jiang Xin, Jan 26, 2022 at 08:17:

We used to ignore the SIGPIPE signal when calling "pre-receive" hook,
so we could tolerant a buggy "pre-receive" implementation which didn't
consume all the input from "receive-pack". On the other side, "ctrl-c"
from the client side will terminate "receive-pack", only if we do not
ignore the SIGPIPE signal when running "pre-receive".

Wouldn't this be much simpler: add a new configuration variable
"receive.loosePreReceiveImplementation", and only ignore SIGPIPE when
"receive-pack" turns off the config variable?

I had not thought of this. Yes it would be much simpler. I'll prepare
another patch with this approach.

Thanks!