$ git clone -n https://src.fedoraproject.org/rpms/rust-bytecheck_derive.git /var/lib/mock/f41-build-side-1-2923650-34982/root/chroot_tmpdir/scmroot/rust-bytecheck_derive
Cloning into '/var/lib/mock/f41-build-side-1-2923650-34982/root/chroot_tmpdir/scmroot/rust-bytecheck_derive'...
$ git fetch origin 1d545141d4e91942fd27485358f6003d3caf46ec:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-bytecheck_derive
 * [new ref]         1d545141d4e91942fd27485358f6003d3caf46ec -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1d54514 Update to version 0.8.0; Fixes RHBZ#2173813