在我的jenkins管道项目中，我可以从git fine中检出代码…但是我们需要做一些git checkins，而且显然没有缓存凭据。

    stage 'Checkout'
    git url: 'git@bitbucket.org:myproj.git', branch: 'master', credentialsId: '012ce21d-e920-44ee-b6f7-08df8ab41de0', variable: 'CREDENTIALS'
    sh('git push') <---- fails with Permission denied (public key).

这是示例输出：

Entering stage Checkout
Proceeding
[Pipeline] git
 > git rev-parse --is-inside-work-tree # timeout=10
Fetching changes from the remote Git repository
 > git config remote.origin.url git@bitbucket.org:myproj # timeout=10
Fetching upstream changes from git@bitbucket.org:myproj.git
 > git --version # timeout=10
using GIT_SSH to set credentials 
 > git -c core.askpass=true fetch --tags --progress git@bitbucket.org:myproj.git +refs/heads/*:refs/remotes/origin/*
 > git rev-parse refs/remotes/origin/master^{commit} # timeout=10
 > git rev-parse refs/remotes/origin/origin/master^{commit} # timeout=10
Checking out Revision cc35402c6b39e8a1f8d55a831d2d10215d47ccd0 (refs/remotes/origin/master)
 > git config core.sparsecheckout # timeout=10
 > git checkout -f cc35402c6b39e8a1f8d55a831d2d10215d47ccd0 # timeout=10
 > git branch -a -v --no-abbrev # timeout=10
 > git branch -D master # timeout=10
 > git checkout -b master cc35402c6b39e8a1f8d55a831d2d10215d47ccd0
 > git rev-list cc35402c6b39e8a1f8d55a831d2d10215d47ccd0 # timeout=10
[Pipeline] sh
[myproj] Running shell script
+ git push --set-upstream origin master
Warning: Permanently added the RSA host key for IP address '192.192.143.2' to the list of known hosts.
Permission denied (publickey).
fatal: Could not read from remote repository.

有人对此有很好的解决方案吗？

谢谢