$ git clone -n https://src.fedoraproject.org/rpms/rust-smart-default.git /var/lib/mock/f45-build-45045-820/root/chroot_tmpdir/scmroot/rust-smart-default
Cloning into '/var/lib/mock/f45-build-45045-820/root/chroot_tmpdir/scmroot/rust-smart-default'...
$ git fetch origin 2d6614117455eced30d9f8642156579771cdb09f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-smart-default
 * [new ref]         2d6614117455eced30d9f8642156579771cdb09f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2d66141 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild