$ git clone -n https://src.fedoraproject.org/rpms/ghc-yesod.git /var/lib/mock/f45-build-52273-908/root/chroot_tmpdir/scmroot/ghc-yesod
Cloning into '/var/lib/mock/f45-build-52273-908/root/chroot_tmpdir/scmroot/ghc-yesod'...
$ git fetch origin d3e6306dc54f0b60e51fee690cd657081a82343c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-yesod
 * [new ref]         d3e6306dc54f0b60e51fee690cd657081a82343c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d3e6306 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild