$ git clone -n https://src.fedoraproject.org/rpms/kf6-kunitconversion.git /var/lib/mock/f42-build-side-1-3573611-46768/root/chroot_tmpdir/scmroot/kf6-kunitconversion
Cloning into '/var/lib/mock/f42-build-side-1-3573611-46768/root/chroot_tmpdir/scmroot/kf6-kunitconversion'...
$ git fetch origin 3007dd343f29e25aab8b218a9d7253639dde14e3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kunitconversion
 * [new ref]         3007dd343f29e25aab8b218a9d7253639dde14e3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3007dd3 6.15 and plasma 3.4 compatibility rebuild