$ git clone -n https://src.fedoraproject.org/rpms/rust-tonic-prost-build.git /var/lib/mock/f45-build-45560-823/root/chroot_tmpdir/scmroot/rust-tonic-prost-build
Cloning into '/var/lib/mock/f45-build-45560-823/root/chroot_tmpdir/scmroot/rust-tonic-prost-build'...
$ git fetch origin 714bf8811ad2e947bd900d401907d680f4c56d07:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-tonic-prost-build
 * [new ref]         714bf8811ad2e947bd900d401907d680f4c56d07 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 714bf88 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild