$ git clone -n https://src.fedoraproject.org/rpms/fox.git /var/lib/mock/f45-build-9192-399/root/chroot_tmpdir/scmroot/fox
Cloning into '/var/lib/mock/f45-build-9192-399/root/chroot_tmpdir/scmroot/fox'...
$ git fetch origin c1e9147242edc79b960b673cd3232151b0645afc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fox
 * [new ref]         c1e9147242edc79b960b673cd3232151b0645afc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c1e9147 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild