$ git clone -n https://src.fedoraproject.org/rpms/R-corpus.git /var/lib/mock/f38-build-side-42-init-devel-794738-28038/root/chroot_tmpdir/scmroot/R-corpus
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-794738-28038/root/chroot_tmpdir/scmroot/R-corpus'...
$ git fetch origin 53e42fafddcc82e0d047a5f04c2f92a0acaf57bc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-corpus
 * [new ref]         53e42fafddcc82e0d047a5f04c2f92a0acaf57bc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 53e42fa Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild