$ git clone -n https://gitee.com/opencloudos-stream/petsc.git /var/lib/mock/dist-oc9-epol-build-73941-49361/root/chroot_tmpdir/scmroot/petsc
Cloning into '/var/lib/mock/dist-oc9-epol-build-73941-49361/root/chroot_tmpdir/scmroot/petsc'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/petsc
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 286f273 !2 [I9Q1HK]:Rebuild for hdf5 in opencloudos-stream Merge pull request !2 from ocs-bot/master