You should do the Fetch after adding the remote,
so that the local repository get remote ref. from remote repository
and show you the remote branch(es).
P.S
If use Context Menu, TortoiseGit -> Settings / Git / Remote, to add the remote,
Then TGit will show you a message dialog "Do you want to fetch remote branches from the newly added remote?".
Usually, push "Yes" button at that moment.
Edward Diener於 2013年12月11日星期三UTC+8上午4時17分04秒寫道: