$ git clone -n https://src.fedoraproject.org/rpms/R-ellipsis.git /var/lib/mock/f39-build-1535789-36250/root/chroot_tmpdir/scmroot/R-ellipsis
Cloning into '/var/lib/mock/f39-build-1535789-36250/root/chroot_tmpdir/scmroot/R-ellipsis'...
$ git fetch origin a2abfedea237a24e635e6bf184f73c1fdc5e24a2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-ellipsis
 * [new ref]         a2abfedea237a24e635e6bf184f73c1fdc5e24a2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a2abfed Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild