$ git clone -n https://src.fedoraproject.org/rpms/fctxpd.git /var/lib/mock/f39-build-1533335-36227/root/chroot_tmpdir/scmroot/fctxpd
Cloning into '/var/lib/mock/f39-build-1533335-36227/root/chroot_tmpdir/scmroot/fctxpd'...
$ git fetch origin a509ec0bd0541b4fd6a15248e96fde0ae6da9145:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fctxpd
 * [new ref]         a509ec0bd0541b4fd6a15248e96fde0ae6da9145 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a509ec0 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild