$ git clone -n https://gitee.com/src-opencloudos-rpms/glibc /var/lib/mock/dist-oc9-donghua-build-123276-72798/root/chroot_tmpdir/scmroot/glibc
Cloning into '/var/lib/mock/dist-oc9-donghua-build-123276-72798/root/chroot_tmpdir/scmroot/glibc'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/glibc
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7ff5a11 import glibc-2.38-28.tl4