$ git clone -n https://src.fedoraproject.org/rpms/rust-signal-hook-registry.git /var/lib/mock/f39-build-1517161-35692/root/chroot_tmpdir/scmroot/rust-signal-hook-registry
Cloning into '/var/lib/mock/f39-build-1517161-35692/root/chroot_tmpdir/scmroot/rust-signal-hook-registry'...
$ git fetch origin b36503017e72c05eb9ae2b1583430a337107c947:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-signal-hook-registry
 * [new ref]         b36503017e72c05eb9ae2b1583430a337107c947 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b365030 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild