$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtscxml.git /var/lib/mock/f40-build-786459-134293/root/chroot_tmpdir/scmroot/qt6-qtscxml
Cloning into '/var/lib/mock/f40-build-786459-134293/root/chroot_tmpdir/scmroot/qt6-qtscxml'...
$ git fetch origin 20ceba6ffd9e3b8063e3df7c601dafd32a74861a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtscxml
 * [new ref]         20ceba6ffd9e3b8063e3df7c601dafd32a74861a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 20ceba6 6.6.2