$ git clone -n https://src.fedoraproject.org/rpms/ghc-wai.git /var/lib/mock/f45-build-10955-425/root/chroot_tmpdir/scmroot/ghc-wai
Cloning into '/var/lib/mock/f45-build-10955-425/root/chroot_tmpdir/scmroot/ghc-wai'...
$ git fetch origin e5a1cc6a540b5506f7eb76852836d3c695e2f893:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-wai
 * [new ref]         e5a1cc6a540b5506f7eb76852836d3c695e2f893 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e5a1cc6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild