Known Build Error: Could not copy

## Build Information
Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1098962&view=logs&j=5ac7b393-e840-5549-7fb4-a4479af8e7e3
Build error leg or test failing: Build / Test: Ubuntu x64 / Run build.sh
Pull request: https://github.com/dotnet/aspnetcore/pull/62803

## Error Message

Fill the error message using [step by step known issues guidance](https://github.com/dotnet/arcade/blob/main/Documentation/Projects/Build%20Analysis/KnownIssueJsonStepByStep.md).

```json
{
"ErrorMessage": "error MSB3026: Could not copy",
"ErrorPattern": "",
"BuildRetry": true,
"ExcludeConsoleLog": false
}
```

### Known issue validation
**Build: :mag_right:** https://dev.azure.com/dnceng-public/public/_build/results?buildId=1098962
**Error message validated:** `[error MSB3026: Could not copy`]
**Result validation:** :white_check_mark: Known issue matched with the provided build.
**Validation performed at:** 7/18/2025 1:54:41 PM UTC

### Report
#### Summary
|24-Hour Hit Count|7-Day Hit Count|1-Month Count|
|---|---|---|
|0|0|0|