$ git clone -n https://src.fedoraproject.org/rpms/ghc-lukko.git /var/lib/mock/f39-build-1713117-41228/root/chroot_tmpdir/scmroot/ghc-lukko
Cloning into '/var/lib/mock/f39-build-1713117-41228/root/chroot_tmpdir/scmroot/ghc-lukko'...
$ git fetch origin 59440cfad63f22a58be9cfb2cee051b77d1c2ae6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-lukko
 * [new ref]         59440cfad63f22a58be9cfb2cee051b77d1c2ae6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 59440cf revised .cabal file