$ git clone -n https://src.fedoraproject.org/rpms/kf6-modemmanager-qt.git /var/lib/mock/f42-build-863247-171569/root/chroot_tmpdir/scmroot/kf6-modemmanager-qt
Cloning into '/var/lib/mock/f42-build-863247-171569/root/chroot_tmpdir/scmroot/kf6-modemmanager-qt'...
$ git fetch origin 050aa0144438bc36986f393a65b5ee632d575ad7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-modemmanager-qt
 * [new ref]         050aa0144438bc36986f393a65b5ee632d575ad7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 050aa01 Frameworks 6.9