$ git clone -n https://src.fedoraproject.org/rpms/libreswan.git /var/lib/mock/f39-build-1579250-38016/root/chroot_tmpdir/scmroot/libreswan
Cloning into '/var/lib/mock/f39-build-1579250-38016/root/chroot_tmpdir/scmroot/libreswan'...
$ git fetch origin b3b4abc436a6e977954592952226387cca6e314d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libreswan
 * [new ref]         b3b4abc436a6e977954592952226387cca6e314d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b3b4abc Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild