$ git clone -n https://src.fedoraproject.org/rpms/yggdrasil-worker-package-manager.git /var/lib/mock/f41-build-852227-166289/root/chroot_tmpdir/scmroot/yggdrasil-worker-package-manager
Cloning into '/var/lib/mock/f41-build-852227-166289/root/chroot_tmpdir/scmroot/yggdrasil-worker-package-manager'...
$ git fetch origin d50a3b95a5ff3be36c25f71d8137efa9bf9d6f5e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/yggdrasil-worker-package-manager
 * [new ref]         d50a3b95a5ff3be36c25f71d8137efa9bf9d6f5e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d50a3b9 Update to 0.2.3