$ git clone -n https://gitee.com/opencloudos-stream/gfal2.git /var/lib/mock/dist-oc9-epol-build-233113-81794/root/chroot_tmpdir/scmroot/gfal2
Cloning into '/var/lib/mock/dist-oc9-epol-build-233113-81794/root/chroot_tmpdir/scmroot/gfal2'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/gfal2
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9600e14 !2 Update to 2.23.5 Merge pull request !2 from brucezhang/master