$ git clone -n https://gitee.com/ldy-dongyue/mupdf.git /var/lib/mock/dist-an23-build-python3.11-391627-71986/root/chroot_tmpdir/scmroot/mupdf
Cloning into '/var/lib/mock/dist-an23-build-python3.11-391627-71986/root/chroot_tmpdir/scmroot/mupdf'...
$ git fetch origin 2f38badf597827cf75c0f106c81581c4b1005dd3:KOJI_FETCH_HEAD
From https://gitee.com/ldy-dongyue/mupdf
 * [new ref]         2f38badf597827cf75c0f106c81581c4b1005dd3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2f38bad Bugfix for CVE-2023-51103 & CVE-2023-51104 & CVE-2023-51105