Changes to build environment variables are not considered when detecting changes(for git)

[BadLiveware]

Describe the bug

When repo-server computes whether there has been an actual change between two revisions it only takes into account if there has been git file changes
https://github.com/argoproj/argo-cd/blob/master/reposerver/repository/repository.go#L3074-L3099

To Reproduce

1. Create an application with a git source targeting a tag or HEAD or a branch. Use a build environment variable, e.g. $ARGOCD_APP_REVISION as a helm parameter or any other kind of app parameter
2. Push a change that does not do anything else other than update the build environment - Nothing happens, argocd will assume nothing has changed
3. Hard-refresh, will cause build environment changes to be taken into account and a sync will occur.

Expected behavior
ArgoCD to take used build environment variables into account when deciding whether or not something has changed.

Version

❯ argocd version
argocd: v3.1.0+unknown
  BuildDate: 2025-08-14T08:24:54Z
  GitCommit:
  GitTreeState:
  GitTag: 3.1.0
  GoVersion: go1.24.6
  Compiler: gc
  Platform: linux/amd64
argocd-server: v3.1.7+511ebd7
  BuildDate: 2025-09-22T22:21:06Z
  GitCommit: 511ebd799e64f9af6484feaa84a5e718a77620d5
  GitTreeState: clean
  GoVersion: go1.24.6
  Compiler: gc
  Platform: linux/amd64
  Kustomize Version: v5.7.0 2025-06-28T07:00:07Z
  Helm Version: v3.18.4+gd80839c
  Kubectl Version: v0.33.1
  Jsonnet Version: v0.21.0

[todaywasawesome]

Are you using manifest-generate-paths? When you update the application, I understand you're doing it in git correct?

[BadLiveware]

Are you using manifest-generate-paths? When you update the application, I understand you're doing it in git correct?

Yes we're using generate paths, I just tested by removing that and it appears to work as expected. I did try everything default before making this issue expect for removing that 🤦

WindowsTerminal_78Qq8vtwf9.mp4

There is a fix that we are currently running on in #24634
https://github.com/argoproj/argo-cd/pull/24634/files#diff-66db997cf6001ce63d5c5803380962f4b474aae67abacc9e86192673080d2c59R3256-R3344