$ git clone -n https://src.fedoraproject.org/rpms/ghc-reflection.git /var/lib/mock/f45-build-10669-419/root/chroot_tmpdir/scmroot/ghc-reflection
Cloning into '/var/lib/mock/f45-build-10669-419/root/chroot_tmpdir/scmroot/ghc-reflection'...
$ git fetch origin 95096292f710d55597fab7d9d6b673a09f316b49:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-reflection
 * [new ref]         95096292f710d55597fab7d9d6b673a09f316b49 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9509629 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild