$ git clone -n https://src.fedoraproject.org/rpms/plasma-disks.git /var/lib/mock/f40-build-2531745-61830/root/chroot_tmpdir/scmroot/plasma-disks
Cloning into '/var/lib/mock/f40-build-2531745-61830/root/chroot_tmpdir/scmroot/plasma-disks'...
$ git fetch origin aa68d40e6c6368d2f7d4056131ce960a083296ae:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-disks
 * [new ref]         aa68d40e6c6368d2f7d4056131ce960a083296ae -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aa68d40 6.0.1