$ git clone -n https://src.fedoraproject.org/rpms/rust-pest.git /var/lib/mock/f45-build-43798-807/root/chroot_tmpdir/scmroot/rust-pest
Cloning into '/var/lib/mock/f45-build-43798-807/root/chroot_tmpdir/scmroot/rust-pest'...
$ git fetch origin d638764ba246db0f258237588f88f7c57dc0a055:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pest
 * [new ref]         d638764ba246db0f258237588f88f7c57dc0a055 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d638764 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild