git-backup - remove "master" and add a tip about "branch" creation, might clarify https://github.com/opnsense/plugins/issues/3132

source/manual/git-backup.rst

@@ -98,9 +98,6 @@ The fields in OPNSense under :code:`System / Configuration / Backups / Git` shou
 * URL absolutely MUST follow this format when using GitHub and GitLab: :code:`ssh://github.com/user_name/repo_name.git`. Any  URL string that does not follow this pattern will not work.
 
 
-* Branch should contain the word: :code:`master`
-
-
 * SSH Private key (discussed below)
 
 
@@ -121,6 +118,13 @@ If you use GitHub, you can add your SSH public key by going to your repository,
 
 Make sure the fields are populated as stated above and that the Enable box is checked, then click on :code:`Setup / Test Git` and you should see a message come back at the top of the page indicating that the first backup was successful.
 
+
+.. Tip::
+
+    When choosing an non-existing remote branch one will be created automatically. An existing one needs to be empty (blank) on order
+    to use it, which in practice is only possible when creating the repository for the first time.
+
+
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 Conflict resolution
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