$ git clone -n https://src.fedoraproject.org/rpms/ghc-base-orphans.git /var/lib/mock/f41-build-side-1-2636472-26230/root/chroot_tmpdir/scmroot/ghc-base-orphans
Cloning into '/var/lib/mock/f41-build-side-1-2636472-26230/root/chroot_tmpdir/scmroot/ghc-base-orphans'...
$ git fetch origin 9d0afdf2d4f8b85de502fdc0a613e2c68133454e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-base-orphans
 * [new ref]         9d0afdf2d4f8b85de502fdc0a613e2c68133454e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9d0afdf https://hackage.haskell.org/package/base-orphans-0.9.2/changelog