$ git clone -n https://src.fedoraproject.org/rpms/zfstream.git /var/lib/mock/f41-build-718961-13080/root/chroot_tmpdir/scmroot/zfstream
Cloning into '/var/lib/mock/f41-build-718961-13080/root/chroot_tmpdir/scmroot/zfstream'...
$ git fetch origin 729f21ab8c9c6b5798b3ba958763a29fd0341b53:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/zfstream
 * [new ref]         729f21ab8c9c6b5798b3ba958763a29fd0341b53 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 729f21a Eliminate use of obsolete %patchN syntax (#2283636)