$ git clone -n https://src.fedoraproject.org/rpms/zydis.git /var/lib/mock/f40-build-799224-142251/root/chroot_tmpdir/scmroot/zydis
Cloning into '/var/lib/mock/f40-build-799224-142251/root/chroot_tmpdir/scmroot/zydis'...
$ git fetch origin 5047a5d5d4cedac968fa4da38fdd4cc329de8d36:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/zydis
 * [new ref]         5047a5d5d4cedac968fa4da38fdd4cc329de8d36 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5047a5d update to 4.1.0