$ git clone -n https://gitee.com/src-opencloudos-rpms/exiv2.git /var/lib/mock/dist-oc9-build-228186-81198/root/chroot_tmpdir/scmroot/exiv2
Cloning into '/var/lib/mock/dist-oc9-build-228186-81198/root/chroot_tmpdir/scmroot/exiv2'...
$ git fetch origin 080303e54e21f69fed97a5ccd4fdc4d2a63dd849:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/exiv2
 * [new ref]         080303e54e21f69fed97a5ccd4fdc4d2a63dd849 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 080303e import exiv2-0.28.2-6.tl4