$ git clone -n https://src.fedoraproject.org/rpms/solarwolf.git /var/lib/mock/f45-build-36193-702/root/chroot_tmpdir/scmroot/solarwolf
Cloning into '/var/lib/mock/f45-build-36193-702/root/chroot_tmpdir/scmroot/solarwolf'...
$ git fetch origin b5d0526bfb6040c477e8abb205617135666c67d3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/solarwolf
 * [new ref]         b5d0526bfb6040c477e8abb205617135666c67d3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b5d0526 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild