$ git clone -n https://src.fedoraproject.org/rpms/rust-strum_macros0.21.git /var/lib/mock/f45-build-45231-821/root/chroot_tmpdir/scmroot/rust-strum_macros0.21
Cloning into '/var/lib/mock/f45-build-45231-821/root/chroot_tmpdir/scmroot/rust-strum_macros0.21'...
$ git fetch origin 8b0d4dc904782f231a36c4ee9ba792769d8de7a9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-strum_macros0.21
 * [new ref]         8b0d4dc904782f231a36c4ee9ba792769d8de7a9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8b0d4dc Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild