$ git clone -n https://src.fedoraproject.org/rpms/libdivide.git /var/lib/mock/f45-build-16045-481/root/chroot_tmpdir/scmroot/libdivide
Cloning into '/var/lib/mock/f45-build-16045-481/root/chroot_tmpdir/scmroot/libdivide'...
$ git fetch origin 908d2a51523cdbfc60aaed58440981dc83fa99d9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libdivide
 * [new ref]         908d2a51523cdbfc60aaed58440981dc83fa99d9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 908d2a5 Update to 5.4.0 (close RHBZ#2529172)