DVC Fetch: Silently Ignores Failed Git Authentication #10992
Description
Bug Report
Description
When running fetch or an imported target, DVC tries to fetch the target's repo via git. If git is supplied with incorrect PAT token, DVC does not report authentication failure, instead it appears to fetch and reports "Everything is up to date."
Reproduce
- Do a dvc import from another repo
- Run
dvc fetch - When prompted to authenticate, enter bad PAT token
- No error is raised!
Expected
DVC should report an auth failure
Environment information
Output of dvc doctor:
$ dvc doctor
DVC version: 3.65.0 (pip)
-------------------------
Platform: Python 3.12.12 on Linux-6.8.0-1044-azure-x86_64-with-glibc2.35
Subprojects:
dvc_data = 3.17.0
dvc_objects = 5.2.0
dvc_render = 1.0.2
dvc_task = 0.40.2
scmrepo = 3.6.1
Supports:
azure (adlfs = 2025.8.0, knack = 0.12.0, azure-identity = 1.25.1),
http (aiohttp = 3.12.9, aiohttp-retry = 2.9.1),
https (aiohttp = 3.12.9, aiohttp-retry = 2.9.1),
ssh (sshfs = 2025.2.0)
Config:
Global: /home/azureuser/.config/dvc
System: /etc/xdg/dvc
Cache types: symlink
Cache directory: ext4 on /dev/sdb1
Caches: local
Remotes: azure
Workspace directory: ext4 on /dev/sda1
Repo: dvc, git
Repo.site_cache_dir: /var/tmp/dvc/repo/0d9f8cd50b2b0f4097fcfa7092e688b0Additional Information (if any):