$ git clone -n https://src.fedoraproject.org/rpms/R-clipr.git /var/lib/mock/f39-build-1470460-33896/root/chroot_tmpdir/scmroot/R-clipr
Cloning into '/var/lib/mock/f39-build-1470460-33896/root/chroot_tmpdir/scmroot/R-clipr'...
$ git fetch origin 0b6a267cd78906a3a6ec2f954d86d3b52e9aad11:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-clipr
 * [new ref]         0b6a267cd78906a3a6ec2f954d86d3b52e9aad11 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0b6a267 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild