$ git clone -n https://src.fedoraproject.org/rpms/rust-string_cache_codegen.git /var/lib/mock/f45-build-45210-821/root/chroot_tmpdir/scmroot/rust-string_cache_codegen
Cloning into '/var/lib/mock/f45-build-45210-821/root/chroot_tmpdir/scmroot/rust-string_cache_codegen'...
$ git fetch origin 65da4965ddc91659b40386caa7300e181a747980:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-string_cache_codegen
 * [new ref]         65da4965ddc91659b40386caa7300e181a747980 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 65da496 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild