Problem

cargo update -p should only update the specify package. Instead, it updates git repositories as well.

Steps

1. git clone https://github.com/rust-lang/crater/
2. cd crater
3. git checkout dcc54566d5ec82cabca435c0145cbd06f32d3602
4. cargo update -p crater

$ cargo update -p crater
    Updating crates.io index
    Updating git repository `https://github.com/rust-lang/team`
    Updating rust_team_data v1.0.0 (https://github.com/rust-lang/team#8d8902d7) -> #a3c474be

Output of cargo version: cargo 1.47.0 (f3c7e06 2020-08-28)