Console Output

using credential docker-jenkins-github-credentials
Cloning the remote Git repository
Cloning with configured refspecs honoured and without tags
Cloning repository https://github.com/docker/cli.git
 > git init /home/ubuntu/workspace/cli_PR-1355 # timeout=10
Fetching upstream changes from https://github.com/docker/cli.git
 > git --version # timeout=10
 > git --version # 'git version 2.17.1'
using GIT_ASKPASS to set credentials docker-jenkins GitHub credentials
 > git fetch --no-tags --progress -- https://github.com/docker/cli.git +refs/pull/1355/head:refs/remotes/origin/PR-1355 +refs/heads/master:refs/remotes/origin/master # timeout=10
Fetching without tags
Merging remotes/origin/master commit 9b92be00e4bd02f0ba00d7523cc11d1fd3436d17 into PR head commit 3f8dcb8db399ee3b99a20a4c1477692109223f32
 > git config remote.origin.url https://github.com/docker/cli.git # timeout=10
 > git config --add remote.origin.fetch +refs/pull/1355/head:refs/remotes/origin/PR-1355 # timeout=10
 > git config --add remote.origin.fetch +refs/heads/master:refs/remotes/origin/master # timeout=10
 > git config remote.origin.url https://github.com/docker/cli.git # timeout=10
Fetching upstream changes from https://github.com/docker/cli.git
using GIT_ASKPASS to set credentials docker-jenkins GitHub credentials
 > git fetch --no-tags --progress -- https://github.com/docker/cli.git +refs/pull/1355/head:refs/remotes/origin/PR-1355 +refs/heads/master:refs/remotes/origin/master # timeout=10
 > git config core.sparsecheckout # timeout=10
 > git checkout -f 3f8dcb8db399ee3b99a20a4c1477692109223f32 # timeout=10
 > git remote # timeout=10
 > git config --get remote.origin.url # timeout=10
using GIT_ASKPASS to set credentials docker-jenkins GitHub credentials
 > git merge 9b92be00e4bd02f0ba00d7523cc11d1fd3436d17 # timeout=10
Merge succeeded, producing 842de86bb0d60c3523343517bdd7989b4e16a6e4
Checking out Revision 842de86bb0d60c3523343517bdd7989b4e16a6e4 (PR-1355)
Commit message: "Merge commit '9b92be00e4bd02f0ba00d7523cc11d1fd3436d17' into HEAD"
First time build. Skipping changelog.
 > git rev-parse HEAD^{commit} # timeout=10
 > git config core.sparsecheckout # timeout=10
 > git checkout -f 842de86bb0d60c3523343517bdd7989b4e16a6e4 # timeout=10
 > git --version # timeout=10
 > git --version # 'git version 2.17.1'
fatal: bad object 5d8b74fd03a1c7cc00e1c1f32d100ed97a17f4f0