Cannot push initial branch for tracked repo

This issue was reported on the Gitlab instance when attempting to push a master branch to a new repo. https://gitlab.eclipse.org/eclipsefdn/gitlab/-/issues/36#note_6619. If the new repo is already tracked before a branch is created, this could present an issue. We should also try to check whether there is a HEAD/main to compare to, as there is some funky behavior when there isn't one:

remote: fatal: unknown commit refs/heads/main
remote: Commit: _nil            ~
remote:
remote:
remote: Warnings:
remote:         A commit is required to validate
remote: Any warnings or errors noted above may indicate compliance issues with committer ECA requirements. More information may be found on https://www.eclipse.org/legal/ECA.php
remote:
remote:
To gitlab.eclipse.org:eclipse/titan/test.git

changed the description

added 1 deleted label

added Bug label

assigned to @malowe

mentioned in issue #33 (closed)

changed milestone to %1.0

added statetodo label

added to epic eclipsefdn&15 (closed)

added statewip label and removed statetodo label

mentioned in merge request !83 (merged)

added statereview label and removed statewip label

mentioned in commit 4321b1f8

mentioned in commit 19d9fa5a

added statedone label and removed statereview label

Live on production and tested, looks good. Closing

closed