$ git clone -n https://src.fedoraproject.org/rpms/xcb-util-renderutil.git /var/lib/mock/f45-build-38638-726/root/chroot_tmpdir/scmroot/xcb-util-renderutil
Cloning into '/var/lib/mock/f45-build-38638-726/root/chroot_tmpdir/scmroot/xcb-util-renderutil'...
$ git fetch origin 52dc6e68e8823026183aae2a358cea83a2f68135:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xcb-util-renderutil
 * [new ref]         52dc6e68e8823026183aae2a358cea83a2f68135 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 52dc6e6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild