$ git clone -n https://src.fedoraproject.org/rpms/libdeltacloud.git /var/lib/mock/f40-build-2525667-61811/root/chroot_tmpdir/scmroot/libdeltacloud
Cloning into '/var/lib/mock/f40-build-2525667-61811/root/chroot_tmpdir/scmroot/libdeltacloud'...
$ git fetch origin 84414efa5ece9b579f39d6c56374110123cdbfa4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libdeltacloud
 * [new ref]         84414efa5ece9b579f39d6c56374110123cdbfa4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 84414ef Retired: Long term failure to build