$ git clone -n https://src.fedoraproject.org/flatpaks/pychess /var/tmp/koji/tasks/4021/132124021/pychess
Cloning into '/var/tmp/koji/tasks/4021/132124021/pychess'...
$ git fetch origin 9f217c490f0b64fc83b635d3d43071573af85912:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/flatpaks/pychess
 * [new ref]         9f217c490f0b64fc83b635d3d43071573af85912 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9f217c4 F42