$ git clone -n https://src.fedoraproject.org/rpms/rust-konst_macro_rules.git /var/lib/mock/f45-build-42790-796/root/chroot_tmpdir/scmroot/rust-konst_macro_rules
Cloning into '/var/lib/mock/f45-build-42790-796/root/chroot_tmpdir/scmroot/rust-konst_macro_rules'...
$ git fetch origin 661d7a62104dd3942b94f6d73c6fc3f9a91b96b5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-konst_macro_rules
 * [new ref]         661d7a62104dd3942b94f6d73c6fc3f9a91b96b5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 661d7a6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild