$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtbase.git /var/lib/mock/f40-build-1465749-23665/root/chroot_tmpdir/scmroot/qt6-qtbase
Cloning into '/var/lib/mock/f40-build-1465749-23665/root/chroot_tmpdir/scmroot/qt6-qtbase'...
$ git fetch origin 9969257b2b62ea1f87111be17a2db4e286c1c6e9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtbase
 * [new ref]         9969257b2b62ea1f87111be17a2db4e286c1c6e9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9969257 Merge branch 'rawhide' into f40