$ git clone -n https://src.fedoraproject.org/rpms/qt6ct.git /var/lib/mock/f41-build-861357-169705/root/chroot_tmpdir/scmroot/qt6ct
Cloning into '/var/lib/mock/f41-build-861357-169705/root/chroot_tmpdir/scmroot/qt6ct'...
$ git fetch origin b7d23cb118fd6d4073be721a967e8ce8c3102c02:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6ct
 * [new ref]         b7d23cb118fd6d4073be721a967e8ce8c3102c02 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b7d23cb Rebuild (qt6)