$ git clone -n https://gitee.com/src-opencloudos-rpms/python-black.git /var/lib/mock/dist-oc9-epol-build-55407-14780/root/chroot_tmpdir/scmroot/python-black
Cloning into '/var/lib/mock/dist-oc9-epol-build-55407-14780/root/chroot_tmpdir/scmroot/python-black'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/python-black
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 898a1f6 import python-black-22.12.0-2.tl4