$ git clone -n https://src.fedoraproject.org/rpms/ghc-x509-validation.git /var/lib/mock/f40-build-744642-111787/root/chroot_tmpdir/scmroot/ghc-x509-validation
Cloning into '/var/lib/mock/f40-build-744642-111787/root/chroot_tmpdir/scmroot/ghc-x509-validation'...
$ git fetch origin 0e428ebc18a942453420113a5668610340d9bbf1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-x509-validation
 * [new ref]         0e428ebc18a942453420113a5668610340d9bbf1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0e428eb bump release