importers: high cpu usage during git clone phase

[helio-frota]

not 100% sure but I think we can use perf + hotspot to indentify who is causing this cpu high usage

• enable the osv-github importer
• edit Cargo.toml adding this content at the end of the file

[profile.release]
debug = true

• ofc build with --release
• run the importer and then perf record -F99 --call-graph dwarf -p PID_here, collect that until the cpu decrease
• sudo dnf install hotspot or download and run https://github.com/KDAB/hotspot/releases appImage using/opening the generated perf.data file
• see what happened

[helio-frota]

git2 is causing this mess according to perf and hotspot: