$ git clone -n https://gitee.com/wanghuan158/mutter.git /var/lib/mock/dist-an23.2-build-429642-73034/root/chroot_tmpdir/scmroot/mutter
Cloning into '/var/lib/mock/dist-an23.2-build-429642-73034/root/chroot_tmpdir/scmroot/mutter'...
$ git fetch origin 0a9340355a9462624e1a91c8d22a9e23a2cb22a3:KOJI_FETCH_HEAD
From https://gitee.com/wanghuan158/mutter
 * [new ref]         0a9340355a9462624e1a91c8d22a9e23a2cb22a3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0a93403 update mutter.spec.