$ git clone -n https://src.fedoraproject.org/rpms/rust-rust-embed-impl.git /var/lib/mock/f45-build-44527-814/root/chroot_tmpdir/scmroot/rust-rust-embed-impl
Cloning into '/var/lib/mock/f45-build-44527-814/root/chroot_tmpdir/scmroot/rust-rust-embed-impl'...
$ git fetch origin c03c8145025afb9d8a0679687cff2c9ddb67ae49:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rust-embed-impl
 * [new ref]         c03c8145025afb9d8a0679687cff2c9ddb67ae49 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c03c814 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild