$ git clone -n https://src.fedoraproject.org/rpms/R-wesanderson.git /var/lib/mock/f39-build-1501262-34826/root/chroot_tmpdir/scmroot/R-wesanderson
Cloning into '/var/lib/mock/f39-build-1501262-34826/root/chroot_tmpdir/scmroot/R-wesanderson'...
$ git fetch origin 7cfbb92cf91975b26f26ff27bfd710c1a5b5942a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-wesanderson
 * [new ref]         7cfbb92cf91975b26f26ff27bfd710c1a5b5942a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7cfbb92 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild