$ git clone -n https://src.fedoraproject.org/rpms/rust-image-webp.git /var/lib/mock/f41-build-side-1-2992587-36014/root/chroot_tmpdir/scmroot/rust-image-webp
Cloning into '/var/lib/mock/f41-build-side-1-2992587-36014/root/chroot_tmpdir/scmroot/rust-image-webp'...
$ git fetch origin 88b10c1628ba72b5136de3711110e03438fc8071:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-image-webp
 * [new ref]         88b10c1628ba72b5136de3711110e03438fc8071 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 88b10c1 Update to version 0.1.3; Fixes RHBZ#2298486