$ git clone -n https://src.fedoraproject.org/rpms/plasma-thunderbolt.git /var/lib/mock/f40-build-2418126-60573/root/chroot_tmpdir/scmroot/plasma-thunderbolt
Cloning into '/var/lib/mock/f40-build-2418126-60573/root/chroot_tmpdir/scmroot/plasma-thunderbolt'...
$ git fetch origin 66cabddd8b137fdb8645e7bbd28ae7dcc0447eae:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-thunderbolt
 * [new ref]         66cabddd8b137fdb8645e7bbd28ae7dcc0447eae -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 66cabdd 5.93.0