Defer changelog retrieval until pr creation / update

[viceice]

What would you like Renovate to be able to do?

Currently renovate will fetch changelogs before any branch exists. So it should defer fetching changelogs until we know we create / update a pr.

INFO: Dependency extraction complete
{
  "baseBranch": "main",
  "stats": {
    "managers": {
      "github-actions": {
        "fileCount": 1,
        "depCount": 5
      },
      "nuget": {
        "fileCount": 13,
        "depCount": 37
      }
    },
    "total": {
      "fileCount": 14,
      "depCount": 42
    }
  }
}
DEBUG: Release 3.1.0 is pending status checks
{
  "depName": "coverlet.collector",
  "check": "stabilityDays"
}
DEBUG: All releases are pending - using latest
{
  "depName": "coverlet.collector",
  "bucket": "minor"
}
DEBUG: Package releases lookups complete
{
  "baseBranch": "main"
}
DEBUG: branchifyUpgrades
DEBUG: Using group branchName template
DEBUG: Dependency System.Text.Encoding.CodePages is part of group dotnet monorepo
DEBUG: Using group branchName template
DEBUG: Dependency System.Security.Cryptography.Pkcs is part of group dotnet monorepo
DEBUG: Using group branchName template
DEBUG: Dependency System.Drawing.Common is part of group dotnet monorepo
DEBUG: Using group branchName template
DEBUG: Dependency Microsoft.Extensions.Configuration.Json is part of group dotnet monorepo
DEBUG: Using group branchName template
DEBUG: Dependency System.Text.Encoding.CodePages is part of group dotnet monorepo
DEBUG: Using group branchName template
DEBUG: Dependency System.Security.Cryptography.Pkcs is part of group dotnet monorepo
DEBUG: Using group branchName template
DEBUG: Dependency System.Drawing.Common is part of group dotnet monorepo
DEBUG: Using group branchName template
DEBUG: Dependency Microsoft.Extensions.Configuration.Json is part of group dotnet monorepo
DEBUG: 10 flattened updates found: System.Text.Encoding.CodePages, System.Security.Cryptography.Pkcs, System.Drawing.Common, Microsoft.Extensions.Configuration.Json, System.Text.Encoding.CodePages, System.Security.Cryptography.Pkcs, System.Drawing.Common, Microsoft.Extensions.Configuration.Json, coverlet.collector, FakeItEasy
DEBUG: Returning 3 branch(es)
DEBUG: Fetching changelog: https://github.com/dotnet/runtime (3.1.17 -> 5.0.0)
DEBUG: Fetching changelog: https://github.com/dotnet/runtime (4.7.2 -> 5.0.2)
DEBUG: Fetching changelog: https://github.com/dotnet/runtime (4.7.0 -> 5.0.1)
DEBUG: Fetching changelog: https://github.com/dotnet/runtime (4.7.1 -> 5.0.0)
DEBUG: Fetching changelog: https://github.com/dotnet/runtime (3.1.17 -> 5.0.0)
DEBUG: Fetching changelog: https://github.com/dotnet/runtime (4.7.2 -> 5.0.2)
DEBUG: Fetching changelog: https://github.com/dotnet/runtime (4.7.0 -> 5.0.1)
DEBUG: Fetching changelog: https://github.com/dotnet/runtime (4.7.1 -> 5.0.0)
DEBUG: Fetching changelog: https://github.com/coverlet-coverage/coverlet (3.0.3 -> 3.1.0)
DEBUG: Fetching changelog: https://github.com/FakeItEasy/FakeItEasy (6.2.1 -> 7.1.0)
DEBUG: config.repoIsOnboarded=true

Did you already have any implementation ideas?

[viceice]

seen here https://app.renovatebot.com/dashboard#github/visualon/epplus/407528102

[rarkins]

This was an intentional change as about shyest ago IIRC although maybe it was made earlier than it needs. Someone wanted access to the release notes for the commit message body