$ git clone -n https://src.fedoraproject.org/rpms/rust-signal.git /var/lib/mock/f39-build-1867288-42577/root/chroot_tmpdir/scmroot/rust-signal
Cloning into '/var/lib/mock/f39-build-1867288-42577/root/chroot_tmpdir/scmroot/rust-signal'...
$ git fetch origin 5408c4a0311de97c3d597fb2227c571f821143e4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-signal
 * [new ref]         5408c4a0311de97c3d597fb2227c571f821143e4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5408c4a Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild