`--logfomat` only works for some log

[incubator4]

Describe the bug
Set log format json but not works for git command

To Reproduce
Steps to reproduce the behavior:

just add cli flag with --logformat json

Expected behavior
git command also should output with json format

Additional context
None
Version
v0.17.0

Logs

time="2025-10-30T05:22:43Z" level=info msg=Trace args="[git remote show origin]" dir=/tmp/git-<some-argocd-application>191239555 operation_name="exec git" time_ms=214.585335
{"application":"<some-argocd-application>","level":"info","msg":"resolved remote default branch to 'main' and using that for operations","time":"2025-10-30T05:22:43Z"}
time="2025-10-30T05:22:43Z" level=info msg="git fetch origin main --force --prune --depth 1" dir=/tmp/git-<some-argocd-application>191239555 execID=a6502
time="2025-10-30T05:22:43Z" level=info msg=Trace args="[git fetch origin main --force --prune --depth 1]" dir=/tmp/git-<some-argocd-application>191239555 operation_name="exec git" time_ms=319.240854
time="2025-10-30T05:22:43Z" level=info msg="git checkout --force main" dir=/tmp/git-<some-argocd-application>191239555 execID=317d3
time="2025-10-30T05:22:43Z" level=info msg=Trace args="[git checkout --force main]" dir=/tmp/git-<some-argocd-application>191239555 operation_name="exec git" time_ms=8.699076999999999
time="2025-10-30T05:22:43Z" level=info msg="git clean -ffdx" dir=/tmp/git-<some-argocd-application>191239555 execID=969e3
time="2025-10-30T05:22:43Z" level=info msg=Trace args="[git clean -ffdx]" dir=/tmp/git-<some-argocd-application>191239555 operation_name="exec git" time_ms=1.294031
{"application":"<some-argocd-application>","level":"info","msg":"updating base /tmp/git-<some-argocd-application>191239555/<kustomize-path>","time":"2025-10-30T05:22:43Z"}
{"application":"<some-argocd-application>","level":"info","msg":"Successfully updated the live application spec","time":"2025-10-30T05:22:43Z"}
{"level":"info","msg":"Processing results: applications=25 images_considered=13 images_skipped=12 images_updated=2 errors=6","time":"2025-10-30T05:22:43Z"}

[chengfang]

Thanks for reporting the issue. For git operations, image updater calls argo-cd executil to do the actual git execution, and looks like the image updater logformat setting is not propagated. Will look into that.
https://github.com/argoproj-labs/argocd-image-updater/blob/master-annotation-based/ext/git/client.go#L813

ext/git pkg was copied from argo-cd verbatim so we should try to avoid deviating from the source too much.

[dkarpele]

Hi @incubator4 , I can modify this log and it will look like this. Will it work for you?
Unfortunately "git" log lines are not a part of the main Image Updater context. First 2 lines have more structured information and have information about controller and application.

{"application":"argocd-image-updater-e2e/image-updater-007","controller":"imageupdater","controllerGroup":"argocd-image-updater.argoproj.io","controllerKind":"ImageUpdater","imageUpdater_name":"image-updater-007-1","imageUpdater_namespace":"argocd-image-updater-e2e","level":"info","logger":"reconcile","msg":"Committing 1 parameter update(s) for application image-updater-007","time":"2025-10-30T21:07:28+01:00"}
{"application":"argocd-image-updater-e2e/image-updater-007","controller":"imageupdater","controllerGroup":"argocd-image-updater.argoproj.io","controllerKind":"ImageUpdater","imageUpdater_name":"image-updater-007-1","imageUpdater_namespace":"argocd-image-updater-e2e","level":"trace","logger":"reconcile","msg":"targetRevision for update is 'master'","time":"2025-10-30T21:07:28+01:00"}
{"level":"info","msg":"Initializing https://127.0.0.1:30003/testdata.git to /var/folders/2j/0pgmqhq95pv6l80wmfl7fdxc0000gn/T/git-image-updater-0072771200728","time":"2025-10-30T21:07:28+01:00"}
{"dir":"/var/folders/2j/0pgmqhq95pv6l80wmfl7fdxc0000gn/T/git-image-updater-0072771200728","execID":"6ea05","level":"info","msg":"git fetch origin master --force --prune --depth 1","time":"2025-10-30T21:07:28+01:00"}
{"duration":2271134708,"execID":"6ea05","level":"debug","msg":"","time":"2025-10-30T21:07:30+01:00"}
{"args":"[git fetch origin master --force --prune --depth 1]","dir":"/var/folders/2j/0pgmqhq95pv6l80wmfl7fdxc0000gn/T/git-image-updater-0072771200728","level":"info","msg":"Trace","operation_name":"exec git","time":"2025-10-30T21:07:30+01:00","time_ms":2271.219083}
{"dir":"/var/folders/2j/0pgmqhq95pv6l80wmfl7fdxc0000gn/T/git-image-updater-0072771200728","execID":"ef5f0","level":"info","msg":"git checkout --force master","time":"2025-10-30T21:07:30+01:00"}
{"duration":15583375,"execID":"ef5f0","level":"debug","msg":"branch 'master' set up to track 'origin/master'.\n","time":"2025-10-30T21:07:30+01:00"}

[incubator4]

Hi @incubator4 , I can modify this log and it will look like this. Will it work for you?
Unfortunately "git" log lines are not a part of the main Image Updater context. First 2 lines have more structured information and have information about controller and application.

Thank you for replying this issue.

Definitely, cause of git might works independently. The flag logformat could not control its behavior.

Our purpose and requirements is to make sure that Loki could format with json.

Modify git command log format would be helpful, but I cannot give opinions about informations on git logs.