Something that has come up repeatedly is that git annex reinject is too hard to use since you have to tell it which annexed file you're providing the content for. Now git-annex reinject --known can be passed a list of files and it will reinject any that hash to known annexed contents and ignore the rest. That works best when only one backend is used in a repository; otherwise it would need to be run repeatedly with different --backend values.

Turns out that the GIT_COMMON_DIR feature used by adjusted branches is only a couple years old, so don't let adjusted branches be used with a too old git.

And, git merge is getting a new sanity check that prevents merging in a branch with a disconnected history. git annex sync will inherit that sanity check, but the assistant needs to let such merges happen when eg, pairing repositories, so more git version checking there.