$ git clone -n https://src.fedoraproject.org/rpms/lksctp-tools.git /var/lib/mock/f40-build-2608200-63712/root/chroot_tmpdir/scmroot/lksctp-tools
Cloning into '/var/lib/mock/f40-build-2608200-63712/root/chroot_tmpdir/scmroot/lksctp-tools'...
$ git fetch origin 225e9fd02b15dbf03101442b01967be81998d1ed:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lksctp-tools
 * [new ref]         225e9fd02b15dbf03101442b01967be81998d1ed -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 225e9fd Use SDPX license IDs