$ git clone -n https://src.fedoraproject.org/rpms/rust-nasm-rs.git /var/lib/mock/f39-build-1493991-34542/root/chroot_tmpdir/scmroot/rust-nasm-rs
Cloning into '/var/lib/mock/f39-build-1493991-34542/root/chroot_tmpdir/scmroot/rust-nasm-rs'...
$ git fetch origin 62dd4e25c3409098584099e1c01b50d5d8abd8f3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-nasm-rs
 * [new ref]         62dd4e25c3409098584099e1c01b50d5d8abd8f3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 62dd4e2 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild