$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtwebchannel.git /var/lib/mock/f38-build-side-42-init-devel-1034589-29745/root/chroot_tmpdir/scmroot/qt6-qtwebchannel
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1034589-29745/root/chroot_tmpdir/scmroot/qt6-qtwebchannel'...
$ git fetch origin 3cccad8810d9290a7c47a62d151d9dd2728c94e4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtwebchannel
 * [new ref]         3cccad8810d9290a7c47a62d151d9dd2728c94e4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3cccad8 6.5.2