$ git clone -n https://src.fedoraproject.org/rpms/rust-getrandom0.1.git /var/lib/mock/f45-build-41889-786/root/chroot_tmpdir/scmroot/rust-getrandom0.1
Cloning into '/var/lib/mock/f45-build-41889-786/root/chroot_tmpdir/scmroot/rust-getrandom0.1'...
$ git fetch origin 8ad989bf1eea44778695265a8e4a0ae4af3c97fa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-getrandom0.1
 * [new ref]         8ad989bf1eea44778695265a8e4a0ae4af3c97fa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8ad989b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild