improve warning message when unable to update export
A misleading message was displayed in several cases.
If the user has run eg: git config
remote.push-win-remote.annex-tracking-branch 'adjusted/main(unlocked)'
That is not supported, and now it will tell them it's not a valid
configuration. A user reported doing that, but I don't know if it's a
common point of confusion. If it is a common problem, a better message
would be possible, or it could convert back from the adjusted branch to
the actual branch.
projects / git-annex.git / commit