$ git clone -n https://src.fedoraproject.org/rpms/ghc-network-uri.git /var/lib/mock/f41-build-side-1-2955616-35550/root/chroot_tmpdir/scmroot/ghc-network-uri
Cloning into '/var/lib/mock/f41-build-side-1-2955616-35550/root/chroot_tmpdir/scmroot/ghc-network-uri'...
$ git fetch origin 647a13e29cffc39791ce5b474d789c868bba3531:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-network-uri
 * [new ref]         647a13e29cffc39791ce5b474d789c868bba3531 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 647a13e revise .cabal file