[MDEP-569] copy fails on artifacts previously downloaded via get from repo specified via CLI

**[Tom Wieczorek](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=tom@bibbu.net)** opened **[MDEP-569](https://issues.apache.org/jira/browse/MDEP-569?redirect=false)** and commented

`dependency:copy` fails to copy artifacts that were previously downloaded via `dependency:get` from a remote repository that has been specified on the command line. The error message is:

> The POM for artifact is missing, no dependency information available

and later on

> Failed to execute goal dependency:copy (default-cli) on project standalone-pom: Unable to find/resolve artifact. Failure to find artifact in https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced

But: `dependency:get` actually succeeded and the artifact and its POM are in the local repo.

```none
mvn -version
mvn org.apache.maven.plugins:maven-dependency-plugin:3.0.1:get \
org.apache.maven.plugins:maven-dependency-plugin:3.0.1:copy \
-DremoteRepositories=http://packages.confluent.io/maven/ \
-Dartifact=io.confluent:kafka-schema-registry:3.1.1
ls -la ~/.m2/repository/io/confluent/kafka-schema-registry/3.1.1
```

I've attached the output of the above test snippets.

---

**Affects:** 3.0.1

**Attachments:**
- [dependency-copy-problem-output.txt](https://issues.apache.org/jira/secure/attachment/12870749/dependency-copy-problem-output.txt) (_52.73 kB_)

**Issue Links:**
- [MNG-7001](https://issues.apache.org/jira/browse/MNG-7001) Reconsider seemingly useless check of artifacts' source repository introduced in Maven 3.0

1 votes, 3 watchers

Start by reproducing the Maven commands in the issue with the specified remote repository and artifact, then inspect the attached output and local repository contents. Trace how dependency:get and dependency:copy resolve the artifact and its POM; done means dependency:copy succeeds using the command-line repository.

Written by the indexing model from the issue text.