$ git clone -n https://src.fedoraproject.org/rpms/ghc-foundation.git /var/lib/mock/f39-build-1922563-42978/root/chroot_tmpdir/scmroot/ghc-foundation
Cloning into '/var/lib/mock/f39-build-1922563-42978/root/chroot_tmpdir/scmroot/ghc-foundation'...
$ git fetch origin 590020c722e15cada4475fec386197b61a415646:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-foundation
 * [new ref]         590020c722e15cada4475fec386197b61a415646 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 590020c https://hackage.haskell.org/package/foundation-0.0.30/changelog