$ git clone -n https://src.fedoraproject.org/rpms/kwin.git /var/lib/mock/f39-build-1677002-40954/root/chroot_tmpdir/scmroot/kwin
Cloning into '/var/lib/mock/f39-build-1677002-40954/root/chroot_tmpdir/scmroot/kwin'...
$ git fetch origin 54e0a808435b9654cd6edf264b2967c1e2479a9d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kwin
 * [new ref]         54e0a808435b9654cd6edf264b2967c1e2479a9d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 54e0a80 Bump release and add changelog entry