mirage/mirage: PR #1606: Use Git_net module instead of Git_mirage

@adbc3de

Stages:

• ❌ x86_64-debian-10-4.14 (1m01s)
• ❌ arm64-debian-10-4.14 (58s)
• ❌ x86_64-debian-10-5.2 (2m35s)
• ❌ arm64-debian-10-5.2 (8s)

History:

• 18/05/2025 12:24 ❌ @adbc3de (2m35s)