$ git clone -n https://src.fedoraproject.org/rpms/libfplll.git /var/lib/mock/f40-build-757045-119116/root/chroot_tmpdir/scmroot/libfplll
Cloning into '/var/lib/mock/f40-build-757045-119116/root/chroot_tmpdir/scmroot/libfplll'...
$ git fetch origin 1f2db3443f5b6df11252cdcf4e2a2875511e83dd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libfplll
 * [new ref]         1f2db3443f5b6df11252cdcf4e2a2875511e83dd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1f2db34 Update to 5.4.5 (close RHBZ#2244911)