$ git clone -n https://src.fedoraproject.org/rpms/plasma-disks.git /var/lib/mock/f40-build-2058485-49146/root/chroot_tmpdir/scmroot/plasma-disks
Cloning into '/var/lib/mock/f40-build-2058485-49146/root/chroot_tmpdir/scmroot/plasma-disks'...
$ git fetch origin b998ba112c73eb938690df003d0ef877052eb991:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-disks
 * [new ref]         b998ba112c73eb938690df003d0ef877052eb991 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b998ba1 fix: upload missing sources