Some of git-annex's calls to git duplicate the --config values that are passed by the caller. Here's an example:

cd "$(mktemp -d --tmpdir gx-XXXXXXX)"
git init
git annex init -c --debug
[2020-03-11 10:59:12.932497354] call: git ["--git-dir=.git","--work-tree=.","--literal-pathspecs","-c","","config","annex.uuid","ffad618f-a272-4d1b-8a5b-73778661ac1b"]
[2020-03-11 10:59:12.934971688] process done ExitSuccess
[2020-03-11 10:59:12.93926062] read: git ["config","--null","--list"]
[2020-03-11 10:59:12.941719766] process done ExitSuccess
[2020-03-11 10:59:12.942450637] read: git ["--git-dir=.git","--work-tree=.","--literal-pathspecs","-c","","-c","","show-ref","git-annex"]
[2020-03-11 10:59:12.955818683] read: git ["config","--null","--list"]
[2020-03-11 10:59:12.958211547] process done ExitSuccess
[2020-03-11 10:59:12.958313557] read: git ["--git-dir=.git","--work-tree=.","--literal-pathspecs","-c","","-c","","-c","","status","--porcelain"]
[2020-03-11 10:59:12.960857733] process done ExitSuccess
[2020-03-11 10:59:12.960928142] call: git ["--git-dir=.git","--work-tree=.","--literal-pathspecs","-c","","-c","","-c","","config","filter.annex.smudge","git-annex smudge -- %f"]
[2020-03-11 10:59:12.963408762] process done ExitSuccess

Based on looking at the full output, it seems like a repeated --config value gets tacked on each time after the configuration is re-read.

The above is with a git-annex built from 8.20200226-161-g1978a2420. I see the same duplicates with a git-annex built from 7.20190819-2-g908476a9b.

Those extra values shouldn't cause any problems, but this issue seems worth filing in case there's a simple fix.

Fix was attempted in c8fec6ab0 but that caused annex-ssh-options dropped since 8.20200330 so it was reverted.

The cause of the problem is that the action passed to adjustGitRepo gets run more than once in some cases where the Repo has changed and the adjustment needs to be re-done, so if it appends a value, the value may get appended to a Repo that already had it appended.

So that commit made it check if the value was present and not add it. I don't currently understand why, but that prevented the value getting added. --Joey

Huh, with that commit's patch, the option is passed to all calls to git.. But not to the call to ssh.

Ah.. remoteAnnexSshOptions is populated by parsing the git config, and is what gets passed to ssh. The patch though made it not call Git.Config.Store, so when the git config has been reloaded, it loses the -c config.

Also, I notice that c8fec6ab0 had a second bug: If -c foo=1 -c foo=2 -c foo=1 were passed, it would add the first and second, but not add the third.

I was really not at even 10% back in March. For obvious reasons.

Ok, all fixed, the right way this time. done --Joey