$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtserialbus.git /var/lib/mock/f42-build-868219-176015/root/chroot_tmpdir/scmroot/qt6-qtserialbus
Cloning into '/var/lib/mock/f42-build-868219-176015/root/chroot_tmpdir/scmroot/qt6-qtserialbus'...
$ git fetch origin c0a3f9e3dd4700fafc679819957272a6bd9849a5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtserialbus
 * [new ref]         c0a3f9e3dd4700fafc679819957272a6bd9849a5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c0a3f9e Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild