$ git clone -n https://gitee.com/src-opencloudos-rpms/trousers.git /var/lib/mock/dist-oc8-build-74574-50764/root/chroot_tmpdir/scmroot/trousers
Cloning into '/var/lib/mock/dist-oc8-build-74574-50764/root/chroot_tmpdir/scmroot/trousers'...
$ git fetch origin 7cb752a0e36280714191e1fb152a6492421cad39:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/trousers
 * [new ref]         7cb752a0e36280714191e1fb152a6492421cad39 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7cb752a import trousers-0.3.15-2.tl3