$ git clone -n https://src.fedoraproject.org/rpms/ghc-MissingH.git /var/lib/mock/f40-build-2185155-51289/root/chroot_tmpdir/scmroot/ghc-MissingH
Cloning into '/var/lib/mock/f40-build-2185155-51289/root/chroot_tmpdir/scmroot/ghc-MissingH'...
$ git fetch origin ea3245aa863a9b394e7f06c47da983eb6b5fd175:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-MissingH
 * [new ref]         ea3245aa863a9b394e7f06c47da983eb6b5fd175 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ea3245a https://hackage.haskell.org/package/MissingH-1.6.0.0/changelog