$ git clone -n https://src.fedoraproject.org/rpms/ghc-x509-validation.git /var/lib/mock/f41-build-side-1-3079833-38944/root/chroot_tmpdir/scmroot/ghc-x509-validation
Cloning into '/var/lib/mock/f41-build-side-1-3079833-38944/root/chroot_tmpdir/scmroot/ghc-x509-validation'...
$ git fetch origin 4421501b7eeb4dc720ae1b60aa1edc5d55a4583c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-x509-validation
 * [new ref]         4421501b7eeb4dc720ae1b60aa1edc5d55a4583c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4421501 Replaced by ghc-crypton-x509-validation