$ git clone -n https://src.fedoraproject.org/rpms/fann.git /var/lib/mock/f41-build-735024-13218/root/chroot_tmpdir/scmroot/fann
Cloning into '/var/lib/mock/f41-build-735024-13218/root/chroot_tmpdir/scmroot/fann'...
$ git fetch origin 38fe99020c002e80c51e372e1233219c9ebb7af3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fann
 * [new ref]         38fe99020c002e80c51e372e1233219c9ebb7af3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 38fe990 Eliminate use of obsolete %patchN syntax (#2283636)