$ git clone -n https://src.fedoraproject.org/rpms/R-scales.git /var/lib/mock/f39-build-1536747-36341/root/chroot_tmpdir/scmroot/R-scales
Cloning into '/var/lib/mock/f39-build-1536747-36341/root/chroot_tmpdir/scmroot/R-scales'...
$ git fetch origin 81c41ab83a89901598d52b9dcb21536b60160aff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-scales
 * [new ref]         81c41ab83a89901598d52b9dcb21536b60160aff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 81c41ab Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild