Reproduce steps: 1. git clone -c core.autocrlf=true https://github.com/mongodb/mongo D:\MongoDB\src 2. Open a VS 2017 x64 command prompt and browse to D:\MongoDB\src 3. git checkout master. 4. git pull 5. git checkout 8dd6d47 6. pip.exe install --user -r .\etc\pip\dev-requirements.txt Acutal result: Collecting pylint==2.3.1 (from -r .\etc\pip\components/lint.req (line 3))   Could not find a version that satisfies the requirement pylint==2.3.1 (from -r .\etc\pip\components/lint.req (line 3)) (from versions: 0.15.2, 0.16.0, 0.18.0, 0.18.1, 0.19.0, 0.20.0, 0.21.0, 0.21.1, 0.21.2, 0.21.3, 0.22.0, 0.23.0, 0.24.0, 0.25.0, 0.25.1, 0.25.2, 0.26.0, 0.27.0, 0.28.0, 1.0.0, 1.1.0, 1.2.0, 1.2.1, 1.3.0, 1.3.1, 1.4.0, 1.4.1, 1.4.2, 1.4.3, 1.4.4, 1.4.5, 1.5.0, 1.5.1, 1.5.2, 1.5.3, 1.5.4, 1.5.5, 1.5.6, 1.6.0, 1.6.1, 1.6.2, 1.6.3, 1.6.4, 1.6.5, 1.7.0, 1.7.1, 1.7.2, 1.7.3, 1.7.4, 1.7.5, 1.7.6, 1.8.0, 1.8.1, 1.8.2, 1.8.3, 1.8.4, 1.9.0, 1.9.1, 1.9.2, 1.9.3, 1.9.4) No matching distribution found for pylint==2.3.1 (from -r .\etc\pip\components/lint.req (line 3)) [command took 7 seconds]