$ git clone -n https://src.fedoraproject.org/rpms/wireguard-tools.git /var/lib/mock/f39-build-1625361-39158/root/chroot_tmpdir/scmroot/wireguard-tools
Cloning into '/var/lib/mock/f39-build-1625361-39158/root/chroot_tmpdir/scmroot/wireguard-tools'...
$ git fetch origin db659871ef40571608e4c0e5941b03d27abcd86e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wireguard-tools
 * [new ref]         db659871ef40571608e4c0e5941b03d27abcd86e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at db65987 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild