There is an updated pull request by tranzystorek-io against master on the void-packages repository

https://github.com/tranzystorek-io/void-packages pytest-mock
https://github.com/void-linux/void-packages/pull/39570

python3-pytest-mock: update to 3.9.0
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#### Testing the changes
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A patch file from https://github.com/void-linux/void-packages/pull/39570.patch is attached