$ git clone -n https://src.fedoraproject.org/rpms/plasma-thunderbolt.git /var/lib/mock/f41-build-860577-169005/root/chroot_tmpdir/scmroot/plasma-thunderbolt
Cloning into '/var/lib/mock/f41-build-860577-169005/root/chroot_tmpdir/scmroot/plasma-thunderbolt'...
$ git fetch origin 473f5c252196960a45ddea144ba2d9313e328892:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-thunderbolt
 * [new ref]         473f5c252196960a45ddea144ba2d9313e328892 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 473f5c2 6.2.2