Console Output

17:59:13 The recommended git tool is: git
17:59:13 using credential docker-jenkins-github-credentials
17:59:13 Cloning the remote Git repository
17:59:13 Cloning with configured refspecs honoured and without tags
17:59:14 Fetching without tags
Cloning repository https://github.com/docker/docker-ce-packaging.git
 > git init /home/ubuntu/workspace/docker-ce-packaging_PR-811 # timeout=10
Fetching upstream changes from https://github.com/docker/docker-ce-packaging.git
 > git --version # timeout=10
 > git --version # 'git version 2.25.1'
using GIT_ASKPASS to set credentials docker-jenkins GitHub credentials
 > git fetch --no-tags --force --progress -- https://github.com/docker/docker-ce-packaging.git +refs/pull/811/head:refs/remotes/origin/PR-811 +refs/heads/master:refs/remotes/origin/master # timeout=10
 > git config remote.origin.url https://github.com/docker/docker-ce-packaging.git # timeout=10
 > git config --add remote.origin.fetch +refs/pull/811/head:refs/remotes/origin/PR-811 # 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-ce-packaging.git # timeout=10
17:59:14 Merging remotes/origin/master commit fabfce4790c1c0a1bec8a0d90f5d4020c9f62514 into PR head commit b0cb04ea23b766986c004fc84d4c23ebb19c657e
17:59:14 Merge succeeded, producing b0cb04ea23b766986c004fc84d4c23ebb19c657e
17:59:14 Checking out Revision b0cb04ea23b766986c004fc84d4c23ebb19c657e (PR-811)
17:59:14 Commit message: "rpm: disable btrfs on CentOS 7 / RHEL 7 as it's deprecated"
Fetching upstream changes from https://github.com/docker/docker-ce-packaging.git
using GIT_ASKPASS to set credentials docker-jenkins GitHub credentials
 > git fetch --no-tags --force --progress -- https://github.com/docker/docker-ce-packaging.git +refs/pull/811/head:refs/remotes/origin/PR-811 +refs/heads/master:refs/remotes/origin/master # timeout=10
 > git config core.sparsecheckout # timeout=10
 > git checkout -f b0cb04ea23b766986c004fc84d4c23ebb19c657e # 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 fabfce4790c1c0a1bec8a0d90f5d4020c9f62514 # timeout=10
 > git rev-parse HEAD^{commit} # timeout=10
 > git config core.sparsecheckout # timeout=10
 > git checkout -f b0cb04ea23b766986c004fc84d4c23ebb19c657e # timeout=10
 > git --version # timeout=10
 > git --version # 'git version 2.25.1'
fatal: bad object 4f8fd6a86e521290dafaf7c28eced2a9b21b220a