$ git clone -n https://src.fedoraproject.org/rpms/rust-gix-protocol.git /var/lib/mock/f40-build-2648973-66822/root/chroot_tmpdir/scmroot/rust-gix-protocol
Cloning into '/var/lib/mock/f40-build-2648973-66822/root/chroot_tmpdir/scmroot/rust-gix-protocol'...
$ git fetch origin 56d91b0dbeeffaed0bedfe51db6d6f54aadedb22:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gix-protocol
 * [new ref]         56d91b0dbeeffaed0bedfe51db6d6f54aadedb22 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 56d91b0 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild