$ git clone -n https://src.fedoraproject.org/rpms/erlang-bitcask.git /var/lib/mock/f41-build-side-1-2811230-32927/root/chroot_tmpdir/scmroot/erlang-bitcask
Cloning into '/var/lib/mock/f41-build-side-1-2811230-32927/root/chroot_tmpdir/scmroot/erlang-bitcask'...
$ git fetch origin 42f467342501de241fe591f28cdad0320e52000b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-bitcask
 * [new ref]         42f467342501de241fe591f28cdad0320e52000b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 42f4673 Cosmetic changes