[Integrated] RFR: git-pr: do not fetch pull requests twice

[Erik Helin]

Changeset: 14512736
Author:    Erik Helin <ehelin at openjdk.org>
Date:      2019-12-05 14:54:51 +0000
URL:       https://git.openjdk.java.net/skara/commit/14512736

git-pr: do not fetch pull requests twice

Reviewed-by: rwestberg

! cli/src/main/java/org/openjdk/skara/cli/GitPr.java