$ git clone -n https://gitee.com/src-opencloudos-rpms/fetchmail.git /var/lib/mock/dist-oc9-build-227492-81169/root/chroot_tmpdir/scmroot/fetchmail
Cloning into '/var/lib/mock/dist-oc9-build-227492-81169/root/chroot_tmpdir/scmroot/fetchmail'...
$ git fetch origin bf1897391ba201b72f69f82e4a4ac827b617f759:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/fetchmail
 * [new ref]         bf1897391ba201b72f69f82e4a4ac827b617f759 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bf18973 import fetchmail-6.5.7-1.tl4