$ git clone -n https://src.fedoraproject.org/rpms/ghc-indexed-traversable.git /var/lib/mock/f41-build-side-1-2908510-34741/root/chroot_tmpdir/scmroot/ghc-indexed-traversable
Cloning into '/var/lib/mock/f41-build-side-1-2908510-34741/root/chroot_tmpdir/scmroot/ghc-indexed-traversable'...
$ git fetch origin 8a30cba26b51adc5be0a17d066059c605b5b3731:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-indexed-traversable
 * [new ref]         8a30cba26b51adc5be0a17d066059c605b5b3731 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8a30cba https://hackage.haskell.org/package/indexed-traversable-0.1.4/changelog