$ git clone -n https://src.fedoraproject.org/rpms/ghc-resolv.git /var/lib/mock/f41-build-side-1-2883175-34500/root/chroot_tmpdir/scmroot/ghc-resolv
Cloning into '/var/lib/mock/f41-build-side-1-2883175-34500/root/chroot_tmpdir/scmroot/ghc-resolv'...
$ git fetch origin ae8f2f370c14bd6d6a5e353d23bc388226c46077:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-resolv
 * [new ref]         ae8f2f370c14bd6d6a5e353d23bc388226c46077 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ae8f2f3 refresh .cabal revision