Console Output

13:35:04 using credential docker-jenkins-github-credentials
13:35:04 Cloning the remote Git repository
13:35:04 Cloning with configured refspecs honoured and without tags
13:35:05 Fetching without tags
13:35:05 Merging remotes/origin/master commit 5efe28149a2060ff64faab5d4c1566f4cb994792 into PR head commit 0aae3cdc51c1d3d4b7af97060148bbea48427203
13:35:05 Merge succeeded, producing 0aae3cdc51c1d3d4b7af97060148bbea48427203
13:35:05 Checking out Revision 0aae3cdc51c1d3d4b7af97060148bbea48427203 (PR-2587)
13:35:05 Commit message: "Updates to slim variant"
13:35:05 First time build. Skipping changelog.
Cloning repository https://github.com/docker/docker-py.git
 > git init /home/ubuntu/workspace/docker-py_PR-2587 # timeout=10
Fetching upstream changes from https://github.com/docker/docker-py.git
 > git --version # timeout=10
using GIT_ASKPASS to set credentials docker-jenkins GitHub credentials
 > git fetch --no-tags --progress -- https://github.com/docker/docker-py.git +refs/pull/2587/head:refs/remotes/origin/PR-2587 +refs/heads/master:refs/remotes/origin/master # timeout=10
 > git config remote.origin.url https://github.com/docker/docker-py.git # timeout=10
 > git config --add remote.origin.fetch +refs/pull/2587/head:refs/remotes/origin/PR-2587 # 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/docker-py.git # timeout=10
Fetching upstream changes from https://github.com/docker/docker-py.git
using GIT_ASKPASS to set credentials docker-jenkins GitHub credentials
 > git fetch --no-tags --progress -- https://github.com/docker/docker-py.git +refs/pull/2587/head:refs/remotes/origin/PR-2587 +refs/heads/master:refs/remotes/origin/master # timeout=10
 > git config core.sparsecheckout # timeout=10
 > git checkout -f 0aae3cdc51c1d3d4b7af97060148bbea48427203 # timeout=10
 > git merge 5efe28149a2060ff64faab5d4c1566f4cb994792 # timeout=10
 > git rev-parse HEAD^{commit} # timeout=10
 > git config core.sparsecheckout # timeout=10
 > git checkout -f 0aae3cdc51c1d3d4b7af97060148bbea48427203 # timeout=10
 > git --version # timeout=10
fatal: bad object ad1b00369dd78a15c273e17e363f91bced3f6e18