$ git clone -n https://gitee.com/src-opencloudos-rpms/PyYAML.git /var/lib/mock/dist-oc9-build-64026-16463/root/chroot_tmpdir/scmroot/PyYAML
Cloning into '/var/lib/mock/dist-oc9-build-64026-16463/root/chroot_tmpdir/scmroot/PyYAML'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/PyYAML
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7b45b50 import PyYAML-6.0-5.tl4