$ git clone -n https://src.fedoraproject.org/rpms/rust-tonic-build.git /var/lib/mock/f45-build-45473-823/root/chroot_tmpdir/scmroot/rust-tonic-build
Cloning into '/var/lib/mock/f45-build-45473-823/root/chroot_tmpdir/scmroot/rust-tonic-build'...
$ git fetch origin 2aa441abfe18fe5a603acf18ae61cbdd5b0ee9b0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-tonic-build
 * [new ref]         2aa441abfe18fe5a603acf18ae61cbdd5b0ee9b0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2aa441a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild