$ git clone -n https://src.fedoraproject.org/rpms/libjcat.git /var/lib/mock/f39-build-1625284-39151/root/chroot_tmpdir/scmroot/libjcat
Cloning into '/var/lib/mock/f39-build-1625284-39151/root/chroot_tmpdir/scmroot/libjcat'...
$ git fetch origin 0a7a1a50e064d299fdec51ed9568021d249602e3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libjcat
 * [new ref]         0a7a1a50e064d299fdec51ed9568021d249602e3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0a7a1a5 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild