$ git clone -n https://src.fedoraproject.org/rpms/plasma-nm.git /var/lib/mock/f42-build-3353513-45017/root/chroot_tmpdir/scmroot/plasma-nm
Cloning into '/var/lib/mock/f42-build-3353513-45017/root/chroot_tmpdir/scmroot/plasma-nm'...
$ git fetch origin 36083b43b1815d1092fd8c736a39689694eea577:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-nm
 * [new ref]         36083b43b1815d1092fd8c736a39689694eea577 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 36083b4 6.3.2