Fix github URL in release step (#353)

* Compose a valid github URL.
* Add a git diff step for debugging.

Signed-off-by: Ben Kochie <[email protected]>

Author: SuperQ

.circleci/config.yml

@@ -70,9 +70,10 @@ jobs:
             tar -zvxf git-chglog.tar.gz git-chglog && \
             chmod 755 git-chglog
       - run: ./git-chglog --output CHANGELOG.md --next-tag "${NEW_TAG}"
+      - run: git diff
       - run: git add CHANGELOG.md
       - run: git commit -m "[ci skip] Automatic changelog update"
-      - run: git push "https://${GH_TOKEN}:@${GIT_URL}" || circleci-agent step halt
+      - run: git push "https://${GH_TOKEN}:@github.com/${CIRCLE_PROJECT_USERNAME}/${CIRCLE_PROJECT_REPONAME}.git" || circleci-agent step halt
       - run:
           name: Publishing release
           command: |