$ git clone -n https://src.fedoraproject.org/rpms/rust-encoding_rs.git /var/lib/mock/f45-build-41436-782/root/chroot_tmpdir/scmroot/rust-encoding_rs
Cloning into '/var/lib/mock/f45-build-41436-782/root/chroot_tmpdir/scmroot/rust-encoding_rs'...
$ git fetch origin 4219a566b3238b4bae37d20ec54226ea9da83956:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-encoding_rs
 * [new ref]         4219a566b3238b4bae37d20ec54226ea9da83956 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4219a56 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild