$ git clone -n https://gitee.com/fundawang/libtommath.git /var/lib/mock/dist-an23-build-298650-65838/root/chroot_tmpdir/scmroot/libtommath
Cloning into '/var/lib/mock/dist-an23-build-298650-65838/root/chroot_tmpdir/scmroot/libtommath'...
$ git fetch origin 6d66b039d474e51d19963dadf00a50e4835d181b:KOJI_FETCH_HEAD
From https://gitee.com/fundawang/libtommath
 * [new ref]         6d66b039d474e51d19963dadf00a50e4835d181b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6d66b03 fix CVE-2023-36328