$ git clone -n https://src.fedoraproject.org/rpms/ghc-network-uri.git /var/lib/mock/f40-build-743576-111265/root/chroot_tmpdir/scmroot/ghc-network-uri
Cloning into '/var/lib/mock/f40-build-743576-111265/root/chroot_tmpdir/scmroot/ghc-network-uri'...
$ git fetch origin d3e1512cda1911e4a7f2bbc9ac435a301273b852:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-network-uri
 * [new ref]         d3e1512cda1911e4a7f2bbc9ac435a301273b852 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d3e1512 bump release