$ git clone -n https://src.fedoraproject.org/rpms/hwloc.git /var/lib/mock/f39-build-2177511-51097/root/chroot_tmpdir/scmroot/hwloc
Cloning into '/var/lib/mock/f39-build-2177511-51097/root/chroot_tmpdir/scmroot/hwloc'...
$ git fetch origin c49423282d4d04b8009fc1fbf40b404e6ac52660:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hwloc
 * [new ref]         c49423282d4d04b8009fc1fbf40b404e6ac52660 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c494232 Updated to version 2.10.0