Re: Suspected git grep regression in git 2.40.0

> We have a CI pipeline on a private repository that started failing consistently while running `git grep -P` commands. The command fails with an exit code of -11 and is failing pretty consistently. With prior versions of git there is no issue whatsoever, but with 2.40.0 it always fails on the same call. Other git grep calls are fine, but that one is failing consistently.
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> I was not able to reproduce locally but my main machine is an M1 MacBook Pro, the CI pipeline runs under Kubernetes in AWS and the container is based on Ubuntu 20.04 with the git client installed via the PPA.
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> The error is for this pattern `git grep -cP '^\w+ = json.load'`.
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> As a  workaround we tried to download and install the microsoft-git v2.39.2 deb package since it allows us to downgrade, but then the git grep commands just got stuck.
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