$ git clone -n https://src.fedoraproject.org/rpms/mingw-Cython.git /var/lib/mock/f40-build-782991-132421/root/chroot_tmpdir/scmroot/mingw-Cython
Cloning into '/var/lib/mock/f40-build-782991-132421/root/chroot_tmpdir/scmroot/mingw-Cython'...
$ git fetch origin 9dab8bc8d9a3d63f9280bf908c2339f0f8da9b1f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-Cython
 * [new ref]         9dab8bc8d9a3d63f9280bf908c2339f0f8da9b1f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9dab8bc Update to 3.0.8