$ git clone -n https://src.fedoraproject.org/rpms/rust-bytecheck.git /var/lib/mock/f41-build-side-1-3006103-36735/root/chroot_tmpdir/scmroot/rust-bytecheck
Cloning into '/var/lib/mock/f41-build-side-1-3006103-36735/root/chroot_tmpdir/scmroot/rust-bytecheck'...
$ git fetch origin 22bad2a24759fbf38fa1974184ed1dcc42aa79a3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-bytecheck
 * [new ref]         22bad2a24759fbf38fa1974184ed1dcc42aa79a3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 22bad2a Update to version 0.8.0; Fixes RHBZ#2173812