$ git clone -n https://gitee.com/mgb01105731/jbig2dec.git /var/lib/mock/dist-an23-build-340992-69863/root/chroot_tmpdir/scmroot/jbig2dec
Cloning into '/var/lib/mock/dist-an23-build-340992-69863/root/chroot_tmpdir/scmroot/jbig2dec'...
$ git fetch origin 7e60a7d2753dc6d2f744180ea7fe41d3ecfcb0db:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/jbig2dec
 * [new ref]         7e60a7d2753dc6d2f744180ea7fe41d3ecfcb0db -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7e60a7d rebuild