$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtserialbus.git /var/lib/mock/f40-build-1465748-23665/root/chroot_tmpdir/scmroot/qt6-qtserialbus
Cloning into '/var/lib/mock/f40-build-1465748-23665/root/chroot_tmpdir/scmroot/qt6-qtserialbus'...
$ git fetch origin 4fbec245e4a373e0cc1cc468ce9461ab34655efc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtserialbus
 * [new ref]         4fbec245e4a373e0cc1cc468ce9461ab34655efc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4fbec24 6.7.2