$ git clone -n https://gitee.com/opencloudos-stream/libpng12.git /var/lib/mock/dist-oc9-epol-build-255659-84526/root/chroot_tmpdir/scmroot/libpng12
Cloning into '/var/lib/mock/dist-oc9-epol-build-255659-84526/root/chroot_tmpdir/scmroot/libpng12'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/libpng12
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 553e6e5 !2 [CVE] libpng12: fix CVE-2026-58936 Merge pull request !2 from ocs-bot/agent/cve-CVE-2026-58936-a81d1a