$ git clone -n https://gitee.com/fundawang/libtiff.git /var/lib/mock/dist-an23-build-275594-64312/root/chroot_tmpdir/scmroot/libtiff
Cloning into '/var/lib/mock/dist-an23-build-275594-64312/root/chroot_tmpdir/scmroot/libtiff'...
$ git fetch origin 8cf3289f6741ff8d02badc2f50d73d9721d24eca:KOJI_FETCH_HEAD
From https://gitee.com/fundawang/libtiff
 * [new ref]         8cf3289f6741ff8d02badc2f50d73d9721d24eca -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8cf3289 4.5.1