$ git clone -n https://src.fedoraproject.org/rpms/ostrichriders.git /var/lib/mock/f40-build-2201610-51835/root/chroot_tmpdir/scmroot/ostrichriders
Cloning into '/var/lib/mock/f40-build-2201610-51835/root/chroot_tmpdir/scmroot/ostrichriders'...
$ git fetch origin 715085e7c38256bb61423f66498e0a19e8284e08:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ostrichriders
 * [new ref]         715085e7c38256bb61423f66498e0a19e8284e08 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 715085e Rebuild for SFML-2.6.1