Console Output

02:39:27 [2020-09-25T02:39:27.589Z] using credential sf-release-bot.github.ssh
02:39:27 [2020-09-25T02:39:27.600Z] Cloning the remote Git repository
02:39:27 [2020-09-25T02:39:27.600Z] Cloning with configured refspecs honoured and without tags
02:39:27 [2020-09-25T02:39:27.619Z] Cloning repository git@github.com:docker/compose.git
02:39:27 [2020-09-25T02:39:27.669Z]  > git init /home/ubuntu/workspace/compose_PR-7795 # timeout=10
02:39:27 [2020-09-25T02:39:27.880Z] Fetching upstream changes from git@github.com:docker/compose.git
02:39:27 [2020-09-25T02:39:27.880Z]  > git --version # timeout=10
02:39:27 [2020-09-25T02:39:27.889Z]  > git --version # 'git version 2.17.1'
02:39:27 [2020-09-25T02:39:27.890Z] using GIT_SSH to set credentials docker-jenkins user on github.com
02:39:27 [2020-09-25T02:39:27.919Z]  > git fetch --no-tags --progress -- git@github.com:docker/compose.git +refs/pull/7795/head:refs/remotes/origin/PR-7795 # timeout=10
02:39:30 [2020-09-25T02:39:30.052Z] Fetching without tags
02:39:30 [2020-09-25T02:39:30.010Z]  > git config remote.origin.url git@github.com:docker/compose.git # timeout=10
02:39:30 [2020-09-25T02:39:30.023Z]  > git config --add remote.origin.fetch +refs/pull/7795/head:refs/remotes/origin/PR-7795 # timeout=10
02:39:30 [2020-09-25T02:39:30.043Z]  > git config remote.origin.url git@github.com:docker/compose.git # timeout=10
02:39:30 [2020-09-25T02:39:30.060Z] Fetching upstream changes from git@github.com:docker/compose.git
02:39:30 [2020-09-25T02:39:30.060Z] using GIT_SSH to set credentials docker-jenkins user on github.com
02:39:30 [2020-09-25T02:39:30.066Z]  > git fetch --no-tags --progress -- git@github.com:docker/compose.git +refs/pull/7795/head:refs/remotes/origin/PR-7795 # timeout=10
02:39:30 [2020-09-25T02:39:30.357Z] Checking out Revision 021765931008f5ecdffaf9b4f552c0b76042183b (PR-7795)
02:39:30 [2020-09-25T02:39:30.368Z]  > git config core.sparsecheckout # timeout=10
02:39:30 [2020-09-25T02:39:30.391Z]  > git checkout -f 021765931008f5ecdffaf9b4f552c0b76042183b # timeout=10
02:39:33 [2020-09-25T02:39:33.991Z] Commit message: "Support nested variable expansion"
02:39:34 [2020-09-25T02:39:34.018Z]  > git --version # timeout=10
02:39:34 [2020-09-25T02:39:34.031Z]  > git --version # 'git version 2.17.1'
02:39:34 [2020-09-25T02:39:34.047Z] fatal: bad object 5d8b74fd03a1c7cc00e1c1f32d100ed97a17f4f0