$ git clone -n https://gitee.com/lxpzero/imath.git /var/lib/mock/dist-an23.3-build-421156-72884/root/chroot_tmpdir/scmroot/imath
Cloning into '/var/lib/mock/dist-an23.3-build-421156-72884/root/chroot_tmpdir/scmroot/imath'...
$ git fetch origin a23.2-test:KOJI_FETCH_HEAD
From https://gitee.com/lxpzero/imath
 * [new branch]      a23.2-test -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4acaed3 update imath.spec.