$ git clone -n https://src.fedoraproject.org/rpms/R-waldo.git /var/lib/mock/f38-build-side-42-init-devel-850878-28425/root/chroot_tmpdir/scmroot/R-waldo
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-850878-28425/root/chroot_tmpdir/scmroot/R-waldo'...
$ git fetch origin 28a76d5e71b86a7a85825083192568eb2c3a935d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-waldo
 * [new ref]         28a76d5e71b86a7a85825083192568eb2c3a935d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 28a76d5 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild