$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtserialport.git /var/lib/mock/f40-build-786445-134291/root/chroot_tmpdir/scmroot/qt6-qtserialport
Cloning into '/var/lib/mock/f40-build-786445-134291/root/chroot_tmpdir/scmroot/qt6-qtserialport'...
$ git fetch origin 8b18b8fae8389441f66c0697e1d72b5f0a580787:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtserialport
 * [new ref]         8b18b8fae8389441f66c0697e1d72b5f0a580787 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8b18b8f 6.6.2