$ git clone -n https://src.fedoraproject.org/rpms/rust-zvariant.git /var/lib/mock/f41-build-side-1-2785562-32579/root/chroot_tmpdir/scmroot/rust-zvariant
Cloning into '/var/lib/mock/f41-build-side-1-2785562-32579/root/chroot_tmpdir/scmroot/rust-zvariant'...
$ git fetch origin a79b931e58ee791f065602757330fe89c05a8110:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-zvariant
 * [new ref]         a79b931e58ee791f065602757330fe89c05a8110 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a79b931 Update to version 4.2.0; Fixes RHBZ#2298899