$ git clone -n https://src.fedoraproject.org/rpms/plasma-desktop.git /var/lib/mock/f40-build-2595471-62744/root/chroot_tmpdir/scmroot/plasma-desktop
Cloning into '/var/lib/mock/f40-build-2595471-62744/root/chroot_tmpdir/scmroot/plasma-desktop'...
$ git fetch origin bcedbf291c4c059a950628ef82f4c61d0e9819ad:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-desktop
 * [new ref]         bcedbf291c4c059a950628ef82f4c61d0e9819ad -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bcedbf2 6.0.2