$ git clone -n https://gitee.com/src-opencloudos-rpms/exiv2.git /var/lib/mock/dist-oc9-build-242593-82998/root/chroot_tmpdir/scmroot/exiv2
Cloning into '/var/lib/mock/dist-oc9-build-242593-82998/root/chroot_tmpdir/scmroot/exiv2'...
$ git fetch origin 4c70b6dcca5cfaaa15b96751c08aeaa117308884:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/exiv2
 * [new ref]         4c70b6dcca5cfaaa15b96751c08aeaa117308884 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4c70b6d import exiv2-0.28.2-7.tl4