Or just a really big git repo. Starship includes a timings command, on linux (with an annoying antivirus meddling) this is what I see against one directory:
git_status - 6ms - "[!?] "
directory - 4ms - "<redacted> "
python - 3ms - "via v3.12.9 (.venv) "
character - <1ms - " "
git_branch - <1ms - "on main "
hostname - <1ms - "<redacted> in "
If I go in to my checked out version of the linux kernel, probably the biggest git project I've got kicking around:
git_status - 115ms - ""
directory - 4ms - "linux "
character - <1ms - " "
git_branch - <1ms - "on master "
hostname - <1ms - "<redacted> in "
That's typically the worst I see it.