$ git clone -n https://gitee.com/src-opencloudos-rpms/exiv2.git /var/lib/mock/dist-oc9-build-124613-74166/root/chroot_tmpdir/scmroot/exiv2
Cloning into '/var/lib/mock/dist-oc9-build-124613-74166/root/chroot_tmpdir/scmroot/exiv2'...
$ git fetch origin 5c62bb2d1c12aa6dcd6b79d6a58a5f0e704bce6c:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/exiv2
 * [new ref]         5c62bb2d1c12aa6dcd6b79d6a58a5f0e704bce6c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5c62bb2 import exiv2-0.28.2-5.tl4