$ git clone -n https://src.fedoraproject.org/rpms/libretro-gw.git /var/lib/mock/f45-build-16906-493/root/chroot_tmpdir/scmroot/libretro-gw
Cloning into '/var/lib/mock/f45-build-16906-493/root/chroot_tmpdir/scmroot/libretro-gw'...
$ git fetch origin 5d05ada5c794f4d6a523f6dfa79c872cd21ba756:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libretro-gw
 * [new ref]         5d05ada5c794f4d6a523f6dfa79c872cd21ba756 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5d05ada Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild