$ git clone -n https://gitee.com/src-opencloudos-rpms/mimalloc.git /var/lib/mock/dist-oc9-build-47272-14592/root/chroot_tmpdir/scmroot/mimalloc
Cloning into '/var/lib/mock/dist-oc9-build-47272-14592/root/chroot_tmpdir/scmroot/mimalloc'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/mimalloc
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3a8f064 import mimalloc-2.0.7-3.tl4