$ git clone -n https://src.fedoraproject.org/rpms/rust-gufo-webp.git /var/lib/mock/f45-build-42228-791/root/chroot_tmpdir/scmroot/rust-gufo-webp
Cloning into '/var/lib/mock/f45-build-42228-791/root/chroot_tmpdir/scmroot/rust-gufo-webp'...
$ git fetch origin 7092e75d773da4df5b86e6c0e64a3b82a9b1fe6f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gufo-webp
 * [new ref]         7092e75d773da4df5b86e6c0e64a3b82a9b1fe6f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7092e75 Update to version 0.5.0; Fixes RHBZ#2529505