$ git clone -n https://gitee.com/lxpzero/jbig2dec.git /var/lib/mock/dist-an23.3-build-415622-72844/root/chroot_tmpdir/scmroot/jbig2dec
Cloning into '/var/lib/mock/dist-an23.3-build-415622-72844/root/chroot_tmpdir/scmroot/jbig2dec'...
$ git fetch origin 284a8074eec5ecd3861bcc02b6cef300de446961:KOJI_FETCH_HEAD
From https://gitee.com/lxpzero/jbig2dec
 * [new ref]         284a8074eec5ecd3861bcc02b6cef300de446961 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 284a807 update to 0.20-7