[enh] 3.9: Install pre-commit and git

pre-commit is not available in Buster, will be in Bullseye
4 jobs for 1.2.0 in 4 minutes and 25 seconds (queued for 3 seconds)
Status Name Job ID Coverage
  Test
passed build_3_6 #56789
docker

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passed build_3_7 #56790
docker

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passed build_3_8 #56791
docker

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passed build_3_9 #56792
docker

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