$ git clone -n https://src.fedoraproject.org/rpms/plasma-systemsettings.git /var/lib/mock/f40-build-761537-121625/root/chroot_tmpdir/scmroot/plasma-systemsettings
Cloning into '/var/lib/mock/f40-build-761537-121625/root/chroot_tmpdir/scmroot/plasma-systemsettings'...
$ git fetch origin f6ad8573f4f6d9b92f1674685904118a066b52f6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-systemsettings
 * [new ref]         f6ad8573f4f6d9b92f1674685904118a066b52f6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f6ad857 fix: upload missing sources