$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtscxml.git /var/lib/mock/f42-build-side-1-3539527-46565/root/chroot_tmpdir/scmroot/qt6-qtscxml
Cloning into '/var/lib/mock/f42-build-side-1-3539527-46565/root/chroot_tmpdir/scmroot/qt6-qtscxml'...
$ git fetch origin c900117675b6d7a661c148574bbca03b6e90b853:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtscxml
 * [new ref]         c900117675b6d7a661c148574bbca03b6e90b853 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c900117 6.9.1