{{ .OldTag }} does not match actual old tag being replaced

[hawkesn]

Describe the bug
Our current git.commit-message-template looks like this (note we're using the helm chart):

      gitCommitTemplate: |
        {{ range .AppChanges -}}
          Updating {{ .Image }} tag from {{ .OldTag }} to {{ .NewTag }}
        {{ end -}}

And we have been getting commit messages that look like this:
Updating <image> tag from 03472e543ed091a5ee315dc0986b19257a2ff49b to fb27c8a3eed5024118f340669d9f481860bc4a15

However, the {{ .OldTag }} appears to be loading an older value in several commits:

To Reproduce
Steps to reproduce the behavior:

• Use the same git commit template
• Do back to back commits

Expected behavior

• The {{ .OldTag }} should represent the actual old tag in the message.

Additional context

• These commits were done about half an hour apart
• I am running 3 pods of argocd-image-updater for HA reasons

Version
0.9.5