$ git clone -n https://src.fedoraproject.org/rpms/ed2k_hash.git /var/lib/mock/f41-build-1020577-18013/root/chroot_tmpdir/scmroot/ed2k_hash
Cloning into '/var/lib/mock/f41-build-1020577-18013/root/chroot_tmpdir/scmroot/ed2k_hash'...
$ git fetch origin fd8c5b6524cd9292a96b4fc47e5f40a735083f1d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ed2k_hash
 * [new ref]         fd8c5b6524cd9292a96b4fc47e5f40a735083f1d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fd8c5b6 Revert "Convert to %autorelease and %autochangelog"