$ git clone -n https://src.fedoraproject.org/rpms/rust-igvm_defs.git /var/lib/mock/f45-build-42516-794/root/chroot_tmpdir/scmroot/rust-igvm_defs
Cloning into '/var/lib/mock/f45-build-42516-794/root/chroot_tmpdir/scmroot/rust-igvm_defs'...
$ git fetch origin 7cb9d3be394b55ab0ce181b52ad9e91da3cbe570:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-igvm_defs
 * [new ref]         7cb9d3be394b55ab0ce181b52ad9e91da3cbe570 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7cb9d3b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild