$ git clone -n https://src.fedoraproject.org/rpms/kf6-solid.git /var/lib/mock/f40-build-787737-134881/root/chroot_tmpdir/scmroot/kf6-solid
Cloning into '/var/lib/mock/f40-build-787737-134881/root/chroot_tmpdir/scmroot/kf6-solid'...
$ git fetch origin e49f61e942fc060530fed6dec3ac5593569cdbb8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-solid
 * [new ref]         e49f61e942fc060530fed6dec3ac5593569cdbb8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e49f61e 6.0.0