$ git clone -n https://src.fedoraproject.org/rpms/ghc-cabal-doctest.git /var/lib/mock/f41-build-835784-158645/root/chroot_tmpdir/scmroot/ghc-cabal-doctest
Cloning into '/var/lib/mock/f41-build-835784-158645/root/chroot_tmpdir/scmroot/ghc-cabal-doctest'...
$ git fetch origin 5d956b44d3a831e2bf0832c126c9cb731253491b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-cabal-doctest
 * [new ref]         5d956b44d3a831e2bf0832c126c9cb731253491b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5d956b4 https://hackage.haskell.org/package/cabal-doctest-1.0.10/changelog