$ git clone -n https://src.fedoraproject.org/rpms/ghc-parallel.git /var/lib/mock/f41-build-837767-159384/root/chroot_tmpdir/scmroot/ghc-parallel
Cloning into '/var/lib/mock/f41-build-837767-159384/root/chroot_tmpdir/scmroot/ghc-parallel'...
$ git fetch origin eecc208d1242ac767f17347bb44f6401c085d13d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-parallel
 * [new ref]         eecc208d1242ac767f17347bb44f6401c085d13d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eecc208 refresh .cabal revision