$ git clone -n https://src.fedoraproject.org/rpms/rust-zerocopy.git /var/lib/mock/f39-build-2097243-50424/root/chroot_tmpdir/scmroot/rust-zerocopy
Cloning into '/var/lib/mock/f39-build-2097243-50424/root/chroot_tmpdir/scmroot/rust-zerocopy'...
$ git fetch origin 4b363fe0f46eb6a5efc4680d1c2435391ef4a5b1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-zerocopy
 * [new ref]         4b363fe0f46eb6a5efc4680d1c2435391ef4a5b1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4b363fe Update to version 0.7.32; Fixes RHBZ#2253063