$ git clone -n https://src.fedoraproject.org/rpms/rust-git-version.git /var/lib/mock/f38-build-side-43-rust-devel-1414748-31450/root/chroot_tmpdir/scmroot/rust-git-version
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1414748-31450/root/chroot_tmpdir/scmroot/rust-git-version'...
$ git fetch origin 79f7a09dde6a926b1f3db47a631e965d8a6d4a5e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-git-version
 * [new ref]         79f7a09dde6a926b1f3db47a631e965d8a6d4a5e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 79f7a09 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild