$ git clone -n https://src.fedoraproject.org/rpms/plasma-sdk.git /var/lib/mock/f42-bootstrap-3533970-46428/root/chroot_tmpdir/scmroot/plasma-sdk
Cloning into '/var/lib/mock/f42-bootstrap-3533970-46428/root/chroot_tmpdir/scmroot/plasma-sdk'...
$ git fetch origin 11b774a5ea80705e14014b9510725983de0314fe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-sdk
 * [new ref]         11b774a5ea80705e14014b9510725983de0314fe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 11b774a 6.3.5