$ git clone -n https://src.fedoraproject.org/rpms/ghc-js-flot.git /var/lib/mock/f40-build-2192220-51450/root/chroot_tmpdir/scmroot/ghc-js-flot
Cloning into '/var/lib/mock/f40-build-2192220-51450/root/chroot_tmpdir/scmroot/ghc-js-flot'...
$ git fetch origin 9b649196a17921cf740ee9f178989b0763775623:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-js-flot
 * [new ref]         9b649196a17921cf740ee9f178989b0763775623 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9b64919 bump release