$ git clone -n https://gitee.com/zhangwenlong01/perl-MIME-Base64.git /var/lib/mock/dist-an23.4-build-505518-74842/root/chroot_tmpdir/scmroot/perl-MIME-Base64
Cloning into '/var/lib/mock/dist-an23.4-build-505518-74842/root/chroot_tmpdir/scmroot/perl-MIME-Base64'...
$ git fetch origin 7bf8896d9dbf9887701f02bb2ac57a8e37abd6b7:KOJI_FETCH_HEAD
From https://gitee.com/zhangwenlong01/perl-MIME-Base64
 * [new ref]         7bf8896d9dbf9887701f02bb2ac57a8e37abd6b7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7bf8896 rebuild for loongarch64