$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtserialbus.git /var/lib/mock/f38-build-side-42-init-devel-1033041-29729/root/chroot_tmpdir/scmroot/qt6-qtserialbus
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1033041-29729/root/chroot_tmpdir/scmroot/qt6-qtserialbus'...
$ git fetch origin 71ed5e43c407c28a741828ce7c1072f4a504016b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtserialbus
 * [new ref]         71ed5e43c407c28a741828ce7c1072f4a504016b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 71ed5e4 6.5.2