$ git clone -n https://src.fedoraproject.org/rpms/gdb-exploitable.git /var/lib/mock/f39-build-2320270-58382/root/chroot_tmpdir/scmroot/gdb-exploitable
Cloning into '/var/lib/mock/f39-build-2320270-58382/root/chroot_tmpdir/scmroot/gdb-exploitable'...
$ git fetch origin 3ff3ec88b1c1f14a60759c69623c3c3809b3dcf2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gdb-exploitable
 * [new ref]         3ff3ec88b1c1f14a60759c69623c3c3809b3dcf2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3ff3ec8 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild