$ git clone -n https://gitee.com/mgb01105731/unbound.git /var/lib/mock/dist-an23-build-python3.11-385858-71833/root/chroot_tmpdir/scmroot/unbound
Cloning into '/var/lib/mock/dist-an23-build-python3.11-385858-71833/root/chroot_tmpdir/scmroot/unbound'...
$ git fetch origin a23.1:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/unbound
 * [new branch]      a23.1      -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 23f38d9 update to 1.20.0