$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtwebchannel.git /var/lib/mock/f40-build-786443-134291/root/chroot_tmpdir/scmroot/qt6-qtwebchannel
Cloning into '/var/lib/mock/f40-build-786443-134291/root/chroot_tmpdir/scmroot/qt6-qtwebchannel'...
$ git fetch origin 287ac2227a80aa45dd949cdc667234c4942b1e0e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtwebchannel
 * [new ref]         287ac2227a80aa45dd949cdc667234c4942b1e0e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 287ac22 6.6.2