$ git clone -n https://src.fedoraproject.org/rpms/git-up.git /var/lib/mock/f38-build-side-42-init-devel-757620-27679/root/chroot_tmpdir/scmroot/git-up
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-757620-27679/root/chroot_tmpdir/scmroot/git-up'...
$ git fetch origin 5d830ad4cc7206817c27d816759a675045504ffa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/git-up
 * [new ref]         5d830ad4cc7206817c27d816759a675045504ffa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5d830ad Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild