$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtquicktimeline.git /var/lib/mock/f42-build-side-1-3536450-46558/root/chroot_tmpdir/scmroot/qt6-qtquicktimeline
Cloning into '/var/lib/mock/f42-build-side-1-3536450-46558/root/chroot_tmpdir/scmroot/qt6-qtquicktimeline'...
$ git fetch origin 8bf8c8739da651180147987f82b6f91ee6e99392:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtquicktimeline
 * [new ref]         8bf8c8739da651180147987f82b6f91ee6e99392 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8bf8c87 6.9.1