$ git clone -n https://src.fedoraproject.org/rpms/R-bindrcpp.git /var/lib/mock/f38-build-side-42-init-devel-870079-28441/root/chroot_tmpdir/scmroot/R-bindrcpp
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-870079-28441/root/chroot_tmpdir/scmroot/R-bindrcpp'...
$ git fetch origin 328af2a4e6e3028cac1d6e7381953ac50177967e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-bindrcpp
 * [new ref]         328af2a4e6e3028cac1d6e7381953ac50177967e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 328af2a Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild