$ git clone -n https://src.fedoraproject.org/rpms/kf5-bluez-qt.git /var/lib/mock/f40-build-786880-134632/root/chroot_tmpdir/scmroot/kf5-bluez-qt
Cloning into '/var/lib/mock/f40-build-786880-134632/root/chroot_tmpdir/scmroot/kf5-bluez-qt'...
$ git fetch origin 84838edf9f9e1c5255a4dc844fb190c9252f5e0e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-bluez-qt
 * [new ref]         84838edf9f9e1c5255a4dc844fb190c9252f5e0e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 84838ed 5.115.0