$ git clone -n https://gitee.com/zhoujiajia111/jbig2dec.git /var/lib/mock/dist-an23-build-450770-73460/root/chroot_tmpdir/scmroot/jbig2dec
Cloning into '/var/lib/mock/dist-an23-build-450770-73460/root/chroot_tmpdir/scmroot/jbig2dec'...
$ git fetch origin 36a8a075e6b46733bcb6b20f66140de9320ab202:KOJI_FETCH_HEAD
From https://gitee.com/zhoujiajia111/jbig2dec
 * [new ref]         36a8a075e6b46733bcb6b20f66140de9320ab202 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 36a8a07 update Source0