Re: Simple git push --tags deleted all branches

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On Thu, 29 Nov 2018 at 16:03, Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx> wrote:
> On Wed, Nov 28 2018, Mateusz Loskot wrote:
> >
> > (using git version 2.19.2.windows.1)
> >
> > I've just encountered one of those WTH moments.
> >
> > I have a bare repository
> >
> > core.git (BARE:master) $ git branch
> >   1.0
> >   2.0
> > * master
> >
> > core.git (BARE:master) $ git tag
> > 1.0.1651
> > 1.0.766
> > 2.0.1103
> > 2.0.1200
> >
> > I published the repo using: git push --all --follow-tags
> >
> > This succeeded, but there seem to be no tags pushed, just branches.
> > So, I followed with
> >
> > core.git (BARE:master) $ git push --tags
> > To XXX
> >  - [deleted]               1.0
> >  - [deleted]               2.0
> >  ! [remote rejected]       master (refusing to delete the current
> > branch: refs/heads/master)
> > error: failed to push some refs to 'XXX'
> >
> > And, I've found out that all branches and tags have been
> > wiped in both, local repo and remote :)
> >
> > I restored the repo and tried out
> >
> > git push origin 1.0
> > git push origin --tags
> >
> > and this time both succeeded, without wiping out any refs.
> >
> > Could anyone help me to understand why remote-less
> >
> > git push --tags
> >
> > is/was so dangerous and unforgiving?!
>
> Since nobody's replied yet, I can't see what's going on here from the
> info you've provided. My guess is that you have something "mirror" set
> on the remote.

Thank you for responding.

The git push --tags hugely surprised me, and here is genuine screenshot
https://twitter.com/mloskot/status/1068072285846859776

> It seems you can't share the repo or its URL, but could you share the
> scrubbed output of 'git config -l --show-origin' when run inside this
> repository?

Here is complete output. I have not stripped the basics like aliases,
just in case.

```
core-external-metadata.git (BARE:master) $ git config -l --show-origin
file:"C:\\ProgramData/Git/config"       core.symlinks=false
file:"C:\\ProgramData/Git/config"       core.autocrlf=true
file:"C:\\ProgramData/Git/config"       color.diff=auto
file:"C:\\ProgramData/Git/config"       color.status=auto
file:"C:\\ProgramData/Git/config"       color.branch=auto
file:"C:\\ProgramData/Git/config"       color.interactive=true
file:"C:\\ProgramData/Git/config"       help.format=html
file:"C:\\ProgramData/Git/config"       http.sslcainfo=C:/Program
Files/Git/mingw64/ssl/certs/ca-bundle.crt
file:"C:\\ProgramData/Git/config"       diff.astextplain.textconv=astextplain
file:"C:\\ProgramData/Git/config"       rebase.autosquash=true
file:C:/Program Files/Git/mingw64/etc/gitconfig
http.sslcainfo=C:/Program Files/Git/mingw64/ssl/certs/ca-bundle.crt
file:C:/Program Files/Git/mingw64/etc/gitconfig http.sslbackend=openssl
file:C:/Program Files/Git/mingw64/etc/gitconfig
diff.astextplain.textconv=astextplain
file:C:/Program Files/Git/mingw64/etc/gitconfig
filter.lfs.clean=git-lfs clean -- %f
file:C:/Program Files/Git/mingw64/etc/gitconfig
filter.lfs.smudge=git-lfs smudge -- %f
file:C:/Program Files/Git/mingw64/etc/gitconfig
filter.lfs.process=git-lfs filter-process
file:C:/Program Files/Git/mingw64/etc/gitconfig filter.lfs.required=true
file:C:/Program Files/Git/mingw64/etc/gitconfig credential.helper=manager
file:C:/Users/mateuszl/.gitconfig       user.name=Mateusz Łoskot
file:C:/Users/mateuszl/.gitconfig       user.email=mateusz@xxxxxxxxxx
file:C:/Users/mateuszl/.gitconfig       github.user=mloskot
file:C:/Users/mateuszl/.gitconfig       core.editor=vim
file:C:/Users/mateuszl/.gitconfig       color.branch=auto
file:C:/Users/mateuszl/.gitconfig       color.diff=auto
file:C:/Users/mateuszl/.gitconfig       color.status=auto
file:C:/Users/mateuszl/.gitconfig       color.ui=auto
file:C:/Users/mateuszl/.gitconfig       alias.br=branch
file:C:/Users/mateuszl/.gitconfig       alias.bv=branch -vv
file:C:/Users/mateuszl/.gitconfig       alias.brv=branch -vv
file:C:/Users/mateuszl/.gitconfig       alias.bra=branch -a
file:C:/Users/mateuszl/.gitconfig       alias.ci=commit --verbose
file:C:/Users/mateuszl/.gitconfig       alias.cia=commit --verbose --amend
file:C:/Users/mateuszl/.gitconfig       alias.ciae=commit --verbose
--amend --no-edit
file:C:/Users/mateuszl/.gitconfig       alias.co=checkout
file:C:/Users/mateuszl/.gitconfig       alias.dc=diff --cached
file:C:/Users/mateuszl/.gitconfig       alias.df=diff
file:C:/Users/mateuszl/.gitconfig       alias.gf=flow
file:C:/Users/mateuszl/.gitconfig       alias.lg=log --color --graph
--pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr)
%C(bold blue)<%an>%Creset' --abbrev-commit
file:C:/Users/mateuszl/.gitconfig       alias.lol=log --graph
--decorate --pretty=oneline --abbrev-commit
file:C:/Users/mateuszl/.gitconfig       alias.lola=log --graph
--decorate --pretty=oneline --abbrev-commit --all
file:C:/Users/mateuszl/.gitconfig       alias.ls=ls-files
file:C:/Users/mateuszl/.gitconfig       alias.lst=lfs status
file:C:/Users/mateuszl/.gitconfig       alias.rt=remote
file:C:/Users/mateuszl/.gitconfig       alias.rtv=remote -v
file:C:/Users/mateuszl/.gitconfig       alias.st=status
file:C:/Users/mateuszl/.gitconfig       alias.ghclm=!sh -c 'git log
$1...$2  --pretty=format:"* [view](http://github.com/$3/$4/commit/%H)
- %s"' -
file:C:/Users/mateuszl/.gitconfig       alias.ign=ls-files -o -i
--exclude-standard
file:C:/Users/mateuszl/.gitconfig
alias.prune-branches-origin=!git remote prune origin && git branch -vv
| grep ': gone]' | awk '{print $1}' | xargs -r git branch -D
file:C:/Users/mateuszl/.gitconfig
alias.prune-branches-mloskot=!git remote prune mloskot && git branch
-vv | grep ': gone]' | awk '{print $1}' | xargs -r git branch -D
file:C:/Users/mateuszl/.gitconfig       alias.hist=log
--pretty=format:'%h %ad | %s%d [%an]' --graph --date=short
file:C:/Users/mateuszl/.gitconfig       commit.template=~/.gitmessage
file:C:/Users/mateuszl/.gitconfig       credential.helper=manager
file:C:/Users/mateuszl/.gitconfig       filter.lfs.clean=git-lfs clean -- %f
file:C:/Users/mateuszl/.gitconfig       filter.lfs.smudge=git-lfs
smudge --skip -- %f
file:C:/Users/mateuszl/.gitconfig       filter.lfs.process=git-lfs
filter-process --skip
file:C:/Users/mateuszl/.gitconfig       filter.lfs.required=true
file:config     core.repositoryformatversion=0
file:config     core.filemode=false
file:config     core.bare=true
file:config     core.symlinks=false
file:config     core.ignorecase=true
file:config     remote.origin.url=https://xxx.com/core-external-metadata.git
file:config     remote.origin.fetch=+refs/*:refs/*
file:config     remote.origin.mirror=true
file:config
lfs.https://xxx.com/core-external-metadata.git/info/lfs.access=basic
```

Best regards,
-- 
Mateusz Loskot, http://mateusz.loskot.net




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