$ git clone -n https://gitee.com/opencloudos-stream/rust-bumpalo.git /var/lib/mock/dist-oc9-epol-build-158405-79743/root/chroot_tmpdir/scmroot/rust-bumpalo
Cloning into '/var/lib/mock/dist-oc9-epol-build-158405-79743/root/chroot_tmpdir/scmroot/rust-bumpalo'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/rust-bumpalo
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 29e60fb !1 Rebuilt for loongarch64 Merge pull request !1 from jiaxinyyang/master