$ git clone -n https://src.fedoraproject.org/rpms/kwin-x11.git /var/lib/mock/f41-build-847903-164223/root/chroot_tmpdir/scmroot/kwin-x11
Cloning into '/var/lib/mock/f41-build-847903-164223/root/chroot_tmpdir/scmroot/kwin-x11'...
$ git fetch origin f7a6ca9e8a06517b23b5e32c6a876bcbdfdeb41f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kwin-x11
 * [new ref]         f7a6ca9e8a06517b23b5e32c6a876bcbdfdeb41f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f7a6ca9 Update to 6.1.5.