$ git clone -n https://gitee.com/src-anolis-os/perl-bignum.git /var/lib/mock/dist-an23-loongarch-build-309773-66339/root/chroot_tmpdir/scmroot/perl-bignum
Cloning into '/var/lib/mock/dist-an23-loongarch-build-309773-66339/root/chroot_tmpdir/scmroot/perl-bignum'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-os/perl-bignum
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 38e4026 Update some description