$ git clone -n https://src.fedoraproject.org/rpms/rust-prost-build.git /var/lib/mock/f45-build-44078-810/root/chroot_tmpdir/scmroot/rust-prost-build
Cloning into '/var/lib/mock/f45-build-44078-810/root/chroot_tmpdir/scmroot/rust-prost-build'...
$ git fetch origin 54ce35ac997a6cb15d5f3af5ec4513c5ccd7bed2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-prost-build
 * [new ref]         54ce35ac997a6cb15d5f3af5ec4513c5ccd7bed2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 54ce35a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild