$ git clone -n https://src.fedoraproject.org/rpms/rust-zvariant.git /var/lib/mock/f40-build-1466310-23684/root/chroot_tmpdir/scmroot/rust-zvariant
Cloning into '/var/lib/mock/f40-build-1466310-23684/root/chroot_tmpdir/scmroot/rust-zvariant'...
$ git fetch origin ce7959ea7d4029b3fad48db268c85feb03a97227:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-zvariant
 * [new ref]         ce7959ea7d4029b3fad48db268c85feb03a97227 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ce7959e Update to version 4.1.2; Fixes RHBZ#2295595