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Update the location of .autoManagedVhd marker file #5415

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Update the location of .autoManagedVhd marker file #5415

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d92b1b4
Update the location of .autoManagedVhd marker file
semihokur Dec 2, 2025
751e730
Address feedback
semihokur Dec 2, 2025
98435e3
Use executionContext.Variables
semihokur Dec 2, 2025
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12 changes: 8 additions & 4 deletions src/Agent.Plugins/GitSourceProvider.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -618,12 +618,16 @@ public async Task GetSourceAsync(
}
}

if (File.Exists(Path.Combine(targetPath, ".autoManagedVhd"))
string agentWorkFolder = executionContext.Variables.GetValueOrDefault("agent.workfolder")?.Value;
if (!string.IsNullOrEmpty(agentWorkFolder)
&& File.Exists(Path.Combine(agentWorkFolder, ".autoManagedVhd"))
&& !AgentKnobs.DisableAutoManagedVhdShallowOverride.GetValue(executionContext).AsBoolean())
{
// The existing working directory comes from an auto-managed VHD and is a full,
// non-shallow clone of the repository. Some pipelines enable shallow fetch, but
// Git cannot convert an existing full clone into a shallow one in-place.
// The existing working directory comes from an AutoManagedVHD (indicated by the
// .autoManagedVhd marker file placed in the agent work folder).
// An AutoManagedVHD always contains a full, non-shallow clone of the repository.
// Some pipelines enable shallow fetch parameters (e.g., fetchDepth > 0). However,
// Git cannot convert an existing full clone into a shallow one in-place.
//
// Technical reason:
// A full clone already has complete commit history and object reachability.
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