$ git clone -n https://src.fedoraproject.org/rpms/rust-mdbook-summary.git /var/lib/mock/f45-build-43244-801/root/chroot_tmpdir/scmroot/rust-mdbook-summary
Cloning into '/var/lib/mock/f45-build-43244-801/root/chroot_tmpdir/scmroot/rust-mdbook-summary'...
$ git fetch origin 70946e712e6c2341eb6b4f09cdeb59b5d0f6b53a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-mdbook-summary
 * [new ref]         70946e712e6c2341eb6b4f09cdeb59b5d0f6b53a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 70946e7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild