$ git clone -n https://src.fedoraproject.org/rpms/plasma-sdk.git /var/lib/mock/f40-build-788838-135430/root/chroot_tmpdir/scmroot/plasma-sdk
Cloning into '/var/lib/mock/f40-build-788838-135430/root/chroot_tmpdir/scmroot/plasma-sdk'...
$ git fetch origin 4858bc0bd2de55f588651e1f488423d810e5ba5c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-sdk
 * [new ref]         4858bc0bd2de55f588651e1f488423d810e5ba5c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4858bc0 6.0.0