You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
boto3-batch-utils was reported malicious
OSV:MAL-2025-6467 - Malicious code in boto3-batch-utils (PyPI)

boto3-batch-utils
1.0.20

This version was deleted from PyPI around 2025-05-08. Installing fails with:
$ pip3 install boto3-batch-utils==1.0.20 ERROR: Could not find a version that satisfies the requirement boto3-batch-utils==1.0.20

Install through StableBuild

You can install this package from StableBuild's PyPI snapshots from before the version was deleted:
pip3 install \ -i https://YOUR_API_KEY.pypimirror.stablebuild.com/2025-05-07/ \ boto3-batch-utils==1.0.20
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Or, download files manually

And install manually via pip: