$ git clone -n https://src.fedoraproject.org/rpms/myproxy.git /var/lib/mock/f39-build-1565344-37566/root/chroot_tmpdir/scmroot/myproxy
Cloning into '/var/lib/mock/f39-build-1565344-37566/root/chroot_tmpdir/scmroot/myproxy'...
$ git fetch origin f12bed94c697571136b5d20d62f8085bb19e0bb2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/myproxy
 * [new ref]         f12bed94c697571136b5d20d62f8085bb19e0bb2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f12bed9 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild