$ git clone -n https://src.fedoraproject.org/rpms/unicornscan.git /var/lib/mock/f41-build-800517-13676/root/chroot_tmpdir/scmroot/unicornscan
Cloning into '/var/lib/mock/f41-build-800517-13676/root/chroot_tmpdir/scmroot/unicornscan'...
$ git fetch origin 109ac0244bd339d976172c5c23e09fc3b73b780b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/unicornscan
 * [new ref]         109ac0244bd339d976172c5c23e09fc3b73b780b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 109ac02 Eliminate use of obsolete %patchN syntax (#2283636)