$ git clone -n https://src.fedoraproject.org/rpms/ghc-network-bsd.git /var/lib/mock/f41-build-837923-159471/root/chroot_tmpdir/scmroot/ghc-network-bsd
Cloning into '/var/lib/mock/f41-build-837923-159471/root/chroot_tmpdir/scmroot/ghc-network-bsd'...
$ git fetch origin 7a460d0d46c1cb09d9019e7f512798364a8ea56f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-network-bsd
 * [new ref]         7a460d0d46c1cb09d9019e7f512798364a8ea56f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7a460d0 refresh .cabal revision