Error mirroring a git repo from Bitbucket to Github

Question

I'm following this guide to setup a mirror from my private Bitbucket repo to a private Github repo.

https://medium.com/@dmitryshaposhnik/sync-bitbucket-repo-to-github-669458ea9a5e

Basically the guide involves setting up a bitbucket pipeline as follows:

clone:
  depth: full

pipelines:
  default:
    - step:
        name: 'Mirror to Github repo....'
        script:
          - git push --mirror git@github.com:my-repo/repo.git

I have it (kinda) working, but the pipeline fails due to the following:

: [remote rejected] master (refusing to delete the current branch: refs/heads/master)

So it looks like the git push --mirror command first deletes all branches, is that correct?

I understand why the master delete won't work (not allowed unless it's an github admin) and I don't want to change the master etc.

I simply want to pipeline all git events on the bitbucket repo over to the github repo.

Anyone know how to do this without hitting this issue?

Separately, I know I could do this by adding another remove to the repo locally and then pushing from there, but I'm looking for a solution that can be handled server side to make it simple for the rest of my team to not have to start manually adding second remotes etc.

Answer 1

You need to do the following:

  default:
    - step:
        name: 'mirror repo'
        script:
          - git clone --mirror "${BITBUCKET_GIT_SSH_ORIGIN}" ./mirrored;
          - cd ./mirrored;
          - git fetch -p --tags origin;
          - git push --mirror "git@github.com:you/target-repo.git"