$ git clone -n https://src.fedoraproject.org/rpms/python-pysdl2.git /var/lib/mock/f42-build-side-1-3563080-46727/root/chroot_tmpdir/scmroot/python-pysdl2
Cloning into '/var/lib/mock/f42-build-side-1-3563080-46727/root/chroot_tmpdir/scmroot/python-pysdl2'...
$ git fetch origin d2703f05cd738ac637f7f386f0893a3031474e8d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pysdl2
 * [new ref]         d2703f05cd738ac637f7f386f0893a3031474e8d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d2703f0 Backport patch from upstream (RHBZ#2339020)