$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtserialbus.git /var/lib/mock/f45-build-34138-678/root/chroot_tmpdir/scmroot/qt6-qtserialbus
Cloning into '/var/lib/mock/f45-build-34138-678/root/chroot_tmpdir/scmroot/qt6-qtserialbus'...
$ git fetch origin 705f5f8d7af5e9fbbbd3c007a29c4ebaea083c95:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtserialbus
 * [new ref]         705f5f8d7af5e9fbbbd3c007a29c4ebaea083c95 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 705f5f8 6.11.2