$ git clone -n https://src.fedoraproject.org/rpms/rust-prost.git /var/lib/mock/f45-build-44075-810/root/chroot_tmpdir/scmroot/rust-prost
Cloning into '/var/lib/mock/f45-build-44075-810/root/chroot_tmpdir/scmroot/rust-prost'...
$ git fetch origin 0f19a7a4c4191389b534a40e9090919aca4dd312:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-prost
 * [new ref]         0f19a7a4c4191389b534a40e9090919aca4dd312 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0f19a7a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild