$ git clone -n https://src.fedoraproject.org/rpms/get_iplayer.git /var/lib/mock/f42-build-side-1-3537742-46560/root/chroot_tmpdir/scmroot/get_iplayer
Cloning into '/var/lib/mock/f42-build-side-1-3537742-46560/root/chroot_tmpdir/scmroot/get_iplayer'...
$ git fetch origin d4e7c9d1c776be383f472a38f14ee35a759f2811:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/get_iplayer
 * [new ref]         d4e7c9d1c776be383f472a38f14ee35a759f2811 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d4e7c9d Update to version 3.36.