$ git clone -n https://src.fedoraproject.org/rpms/lmfit.git /var/lib/mock/f45-build-17567-501/root/chroot_tmpdir/scmroot/lmfit
Cloning into '/var/lib/mock/f45-build-17567-501/root/chroot_tmpdir/scmroot/lmfit'...
$ git fetch origin 8e17c8a09e48aa12597adf0749453a4b48184333:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lmfit
 * [new ref]         8e17c8a09e48aa12597adf0749453a4b48184333 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8e17c8a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild