$ git clone -n https://src.fedoraproject.org/flatpaks/lollypop /var/tmp/koji/tasks/5258/132065258/lollypop
Cloning into '/var/tmp/koji/tasks/5258/132065258/lollypop'...
$ git fetch origin e4f3c403c4d1fdea28b93ec3ad0bb1ca0171fc2c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/flatpaks/lollypop
 * [new ref]         e4f3c403c4d1fdea28b93ec3ad0bb1ca0171fc2c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e4f3c40 F42